HI EDL

Fundamentals of Water Hammer and Surge Suppression - 1 Part Webinar

This webinar has been created to provide an overview of water hammer, pulsation dampeners, effects of water hammer on pumps and valves, transient cavitation, surge supression and case studies.

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Steel Pipe Flange Dimensions

Flanges per AWWA C207 (Class B, D, E, F)

AWWA Class	Nominal Pipe Size (NPS)	OD Flange (A) in.	ID Flange (B) in.	Bolt Number	Bolt Circle Diameter (C) in.	Diameter of Bolts in.	Flange Thickness (T)in.
B	4	9	4.57	8	7.5	0.625	0.625
B	5	10	5.66	8	8.5	0.75	0.625
B	6	11	6.72	8	9.5	0.75	0.688
B	8	13.5	8.72	8	11.75	0.75	0.688
B	10	16	10.88	12	14.25	0.875	0.688
B	12	19	12.88	12	17	0.875	0.688
B	14	21	14.19	12	18.75	1	0.688
B	16	23.5	16.19	16	21.25	1	0.688
B	18	25	18.19	16	22.75	1.125	0.688
B	20	27.5	20.19	20	25	1.125	0.688
B	22	29.5	22.19	20	27.25	1.25	0.75
B	24	32	24.19	20	29.5	1.25	0.75
B	26	34.25	—	24	31.75	1.25	0.812
B	28	36.5	—	28	34	1.25	0.875
B	30	38.75	—	28	36	1.25	0.875
B	32	41.75	—	28	38.5	1.5	0.938
B	34	43.75	—	32	40.5	1.5	0.938
B	36	46	—	32	42.75	1.5	1
B	38	48.75	—	32	45.25	1.5	1
B	40	50.75	—	36	47.25	1.5	1
B	42	53	—	36	49.5	1.5	1.125
B	44	55.25	—	40	51.75	1.5	1.125
B	46	57.25	—	40	53.75	1.5	1.125
B	48	59.5	—	44	56	1.5	1.25
B	50	61.75	—	44	58.25	1.75	1.25
B	52	64	—	44	60.5	1.75	1.25
B	54	66.25	—	44	62.75	1.75	1.375
B	60	73	—	52	69.25	1.75	1.5
B	66	80	—	52	76	1.75	1.625
B	72	86.5	—	60	82.5	1.75	1.75
B	78	93	—	64	89	2	2
B	84	99.75	—	64	95.5	2	2
B	90	106.5	—	68	102	2.25	2.25
B	96	113.25	—	68	108.5	2.25	2.25
B	102	120	—	72	114.5	2.5	2.5
B	108	126.75	—	72	120.75	2.5	2.5
B	114	133.5	—	76	126.75	2.75	2.75
B	120	140.25	—	76	132.75	2.75	2.75
B	126	147	—	80	139.25	3	3
B	132	153.75	—	80	145.75	3	3
B	144	167.25	—	84	158.25	3.25	3.25
D	4	9	4.57	8	7.5	0.625	0.625
D	5	10	5.66	8	8.5	0.75	0.625
D	6	11	6.72	8	9.5	0.75	0.688
D	8	13.5	8.72	8	11.75	0.75	0.688
D	10	16	10.88	12	14.25	0.875	0.688
D	12	19	12.88	12	17	0.875	0.812
D	14	21	14.19	12	18.75	1	0.938
D	16	23.5	16.19	16	21.25	1	1
D	18	25	18.19	16	22.75	1.125	1.062
D	20	27.5	20.19	20	25	1.125	1.125
D	22	29.5	22.19	20	27.25	1.25	1.188
D	24	32	24.19	20	29.5	1.25	1.25
D	26	34.25	—	24	31.75	1.25	1.312
D	28	36.5	—	28	34	1.25	1.312
D	30	38.75	—	28	36	1.25	1.375
D	32	41.75	—	28	38.5	1.5	1.5
D	34	43.75	—	32	40.5	1.5	1.5
D	36	46	—	32	42.75	1.5	1.625
D	38	48.75	—	32	45.25	1.5	1.625
D	40	50.75	—	36	47.25	1.5	1.625
D	42	53	—	36	49.5	1.5	1.75
D	44	55.25	—	40	51.75	1.5	1.75
D	46	57.25	—	40	53.75	1.5	1.75
D	48	59.5	—	44	56	1.5	1.875
D	50	61.75	—	44	58.25	1.75	2
D	52	64	—	44	60.5	1.75	2
D	54	66.25	—	44	62.75	1.75	2.125
D	60	73	—	52	69.25	1.75	2.25
D	66	80	—	52	76	1.75	2.5
D	72	86.5	—	60	82.5	1.75	2.625
D	78	93	—	64	89	2	2.75
D	84	99.75	—	64	95.5	2	2.875
D	90	106.5	—	68	102	2.25	3
D	96	113.25	—	68	108.5	2.25	3.25
D	102	120	—	72	114.5	2.5	3.25
D	108	126.75	—	72	120.75	2.5	3.375
D	114	133.5	—	76	126.75	2.75	3.5
D	120	140.25	—	76	132.75	2.75	3.5
D	126	147	—	80	139.25	3	3.75
D	132	153.75	—	80	145.75	3	3.875
D	144	167.25	—	84	158.25	3.25	4.125
E	4	9	4.57	8	7.5	0.625	1.125
E	5	10	5.66	8	8.5	0.75	1.188
E	6	11	6.72	8	9.5	0.75	1.313
E	8	13.5	8.72	8	11.75	0.75	1.5
E	10	16	10.88	12	14.25	0.875	1.563
E	12	19	12.88	12	17	0.875	1.75
E	14	21	14.19	12	18.75	1	1.875
E	16	23.5	16.19	16	21.25	1	2
E	18	25	18.19	16	22.75	1.125	2.125
E	20	27.5	20.19	20	25	1.125	2.375
E	22	29.5	22.19	20	27.25	1.25	2.5
E	24	32	24.19	20	29.5	1.25	2.625
E	26	34.25	—	24	31.75	1.25	2.75
E	28	36.5	—	28	34	1.25	2.75
E	30	38.75	—	28	36	1.25	2.875
E	32	41.75	—	28	38.5	1.5	3
E	34	43.75	—	32	40.5	1.5	3
E	36	46	—	32	42.75	1.5	3.125
E	38	48.75	—	32	45.25	1.5	3.125
E	40	50.75	—	36	47.25	1.5	3.25
E	42	53	—	36	49.5	1.5	3.375
E	44	55.25	—	40	51.75	1.5	3.375
E	46	57.25	—	40	53.75	1.5	3.438
E	48	59.5	—	44	56	1.5	3.5
E	50	61.75	—	44	58.25	1.75	3.5
E	52	64	—	44	60.5	1.75	3.625
E	54	66.25	—	44	62.75	1.75	3.75
E	60	73	—	52	69.25	1.75	3.875
E	66	80	—	52	76	1.75	4.25
E	72	86.5	—	60	82.5	1.75	4.375
E	78	93	—	64	89	2	4.75
E	84	99.75	—	64	95.5	2	4.75
E	90	106.5	—	68	102	2.25	5.125
E	96	113.25	—	68	108.5	2.25	5.125
E	102	120	—	72	114.5	2.5	5.5
E	108	126.75	—	72	120.75	2.5	5.5
E	114	133.5	—	76	126.75	2.75	5.875
E	120	140.25	—	76	132.75	2.75	5.875
E	126	147	—	80	139.25	3	6.25
E	132	153.75	—	80	145.75	3	6.25
E	144	167.25	—	84	158.25	3.25	6.75
F	4	10	4.57	8	7.88	0.75	1.13
F	5	11	5.66	8	9.25	0.75	1.21
F	6	12.5	6.73	12	10.62	0.75	1.31
F	8	15	8.73	12	13	0.875	1.31
F	10	17.5	10.88	16	15.25	1	1.5
F	12	20.5	12.88	16	17.75	1.125	1.63
F	14	23	14.19	20	20.25	1.125	1.94
F	16	25.5	16.19	20	22.5	1.25	2.14
F	18	28	18.19	24	24.75	1.25	2.25
F	20	30.5	20.19	24	27	1.25	2.33
F	22	33	22.19	24	29.25	1.25	2.5
F	24	36	24.19	24	32	1.5	2.69
F	26	38.25	—	28	34.5	1.75	3
F	28	40.75	—	28	37	1.75	3.13
F	30	43	—	28	39.25	1.75	3.15
F	32	45.25	—	28	41.5	1.75	3.25
F	34	47.5	—	28	43.5	1.75	3.38
F	36	50	—	32	46	2	3.46
F	38	52.25	—	32	48	2	3.5
F	40	54.25	—	36	50.25	2	3.63
F	42	57	—	36	52.75	2	3.81
F	44	59.25	—	36	55	2	4
F	46	61.5	—	40	57.25	2	4.13
F	48	65	—	40	60.75	2	4.5

AWWA Class	Nominal Pipe Size (NPS)	OD Flange (A) in.	ID Flange (B) in.	Bolt Number	Bolt Circle Diameter (C) in.	Diameter of Bolts in.	Flange Thickness (T)in.
B	4	9	4.57	8	7.5	0.625	0.625
B	5	10	5.66	8	8.5	0.75	0.625
B	6	11	6.72	8	9.5	0.75	0.688
B	8	13.5	8.72	8	11.75	0.75	0.688
B	10	16	10.88	12	14.25	0.875	0.688
B	12	19	12.88	12	17	0.875	0.688
B	14	21	14.19	12	18.75	1	0.688
B	16	23.5	16.19	16	21.25	1	0.688
B	18	25	18.19	16	22.75	1.125	0.688
B	20	27.5	20.19	20	25	1.125	0.688
B	22	29.5	22.19	20	27.25	1.25	0.75
B	24	32	24.19	20	29.5	1.25	0.75
B	26	34.25	—	24	31.75	1.25	0.812
B	28	36.5	—	28	34	1.25	0.875
B	30	38.75	—	28	36	1.25	0.875
B	32	41.75	—	28	38.5	1.5	0.938
B	34	43.75	—	32	40.5	1.5	0.938
B	36	46	—	32	42.75	1.5	1
B	38	48.75	—	32	45.25	1.5	1
B	40	50.75	—	36	47.25	1.5	1
B	42	53	—	36	49.5	1.5	1.125
B	44	55.25	—	40	51.75	1.5	1.125
B	46	57.25	—	40	53.75	1.5	1.125
B	48	59.5	—	44	56	1.5	1.25
B	50	61.75	—	44	58.25	1.75	1.25
B	52	64	—	44	60.5	1.75	1.25
B	54	66.25	—	44	62.75	1.75	1.375
B	60	73	—	52	69.25	1.75	1.5
B	66	80	—	52	76	1.75	1.625
B	72	86.5	—	60	82.5	1.75	1.75
B	78	93	—	64	89	2	2
B	84	99.75	—	64	95.5	2	2
B	90	106.5	—	68	102	2.25	2.25
B	96	113.25	—	68	108.5	2.25	2.25
B	102	120	—	72	114.5	2.5	2.5
B	108	126.75	—	72	120.75	2.5	2.5
B	114	133.5	—	76	126.75	2.75	2.75
B	120	140.25	—	76	132.75	2.75	2.75
B	126	147	—	80	139.25	3	3
B	132	153.75	—	80	145.75	3	3
B	144	167.25	—	84	158.25	3.25	3.25
D	4	9	4.57	8	7.5	0.625	0.625
D	5	10	5.66	8	8.5	0.75	0.625
D	6	11	6.72	8	9.5	0.75	0.688
D	8	13.5	8.72	8	11.75	0.75	0.688
D	10	16	10.88	12	14.25	0.875	0.688
D	12	19	12.88	12	17	0.875	0.812
D	14	21	14.19	12	18.75	1	0.938
D	16	23.5	16.19	16	21.25	1	1
D	18	25	18.19	16	22.75	1.125	1.062
D	20	27.5	20.19	20	25	1.125	1.125
D	22	29.5	22.19	20	27.25	1.25	1.188
D	24	32	24.19	20	29.5	1.25	1.25
D	26	34.25	—	24	31.75	1.25	1.312
D	28	36.5	—	28	34	1.25	1.312
D	30	38.75	—	28	36	1.25	1.375
D	32	41.75	—	28	38.5	1.5	1.5
D	34	43.75	—	32	40.5	1.5	1.5
D	36	46	—	32	42.75	1.5	1.625
D	38	48.75	—	32	45.25	1.5	1.625
D	40	50.75	—	36	47.25	1.5	1.625
D	42	53	—	36	49.5	1.5	1.75
D	44	55.25	—	40	51.75	1.5	1.75
D	46	57.25	—	40	53.75	1.5	1.75
D	48	59.5	—	44	56	1.5	1.875
D	50	61.75	—	44	58.25	1.75	2
D	52	64	—	44	60.5	1.75	2
D	54	66.25	—	44	62.75	1.75	2.125
D	60	73	—	52	69.25	1.75	2.25
D	66	80	—	52	76	1.75	2.5
D	72	86.5	—	60	82.5	1.75	2.625
D	78	93	—	64	89	2	2.75
D	84	99.75	—	64	95.5	2	2.875
D	90	106.5	—	68	102	2.25	3
D	96	113.25	—	68	108.5	2.25	3.25
D	102	120	—	72	114.5	2.5	3.25
D	108	126.75	—	72	120.75	2.5	3.375
D	114	133.5	—	76	126.75	2.75	3.5
D	120	140.25	—	76	132.75	2.75	3.5
D	126	147	—	80	139.25	3	3.75
D	132	153.75	—	80	145.75	3	3.875
D	144	167.25	—	84	158.25	3.25	4.125
E	4	9	4.57	8	7.5	0.625	1.125
E	5	10	5.66	8	8.5	0.75	1.188
E	6	11	6.72	8	9.5	0.75	1.313
E	8	13.5	8.72	8	11.75	0.75	1.5
E	10	16	10.88	12	14.25	0.875	1.563
E	12	19	12.88	12	17	0.875	1.75
E	14	21	14.19	12	18.75	1	1.875
E	16	23.5	16.19	16	21.25	1	2
E	18	25	18.19	16	22.75	1.125	2.125
E	20	27.5	20.19	20	25	1.125	2.375
E	22	29.5	22.19	20	27.25	1.25	2.5
E	24	32	24.19	20	29.5	1.25	2.625
E	26	34.25	—	24	31.75	1.25	2.75
E	28	36.5	—	28	34	1.25	2.75
E	30	38.75	—	28	36	1.25	2.875
E	32	41.75	—	28	38.5	1.5	3
E	34	43.75	—	32	40.5	1.5	3
E	36	46	—	32	42.75	1.5	3.125
E	38	48.75	—	32	45.25	1.5	3.125
E	40	50.75	—	36	47.25	1.5	3.25
E	42	53	—	36	49.5	1.5	3.375
E	44	55.25	—	40	51.75	1.5	3.375
E	46	57.25	—	40	53.75	1.5	3.438
E	48	59.5	—	44	56	1.5	3.5
E	50	61.75	—	44	58.25	1.75	3.5
E	52	64	—	44	60.5	1.75	3.625
E	54	66.25	—	44	62.75	1.75	3.75
E	60	73	—	52	69.25	1.75	3.875
E	66	80	—	52	76	1.75	4.25
E	72	86.5	—	60	82.5	1.75	4.375
E	78	93	—	64	89	2	4.75
E	84	99.75	—	64	95.5	2	4.75
E	90	106.5	—	68	102	2.25	5.125
E	96	113.25	—	68	108.5	2.25	5.125
E	102	120	—	72	114.5	2.5	5.5
E	108	126.75	—	72	120.75	2.5	5.5
E	114	133.5	—	76	126.75	2.75	5.875
E	120	140.25	—	76	132.75	2.75	5.875
E	126	147	—	80	139.25	3	6.25
E	132	153.75	—	80	145.75	3	6.25
E	144	167.25	—	84	158.25	3.25	6.75
F	4	10	4.57	8	7.88	0.75	1.13
F	5	11	5.66	8	9.25	0.75	1.21
F	6	12.5	6.73	12	10.62	0.75	1.31
F	8	15	8.73	12	13	0.875	1.31
F	10	17.5	10.88	16	15.25	1	1.5
F	12	20.5	12.88	16	17.75	1.125	1.63
F	14	23	14.19	20	20.25	1.125	1.94
F	16	25.5	16.19	20	22.5	1.25	2.14
F	18	28	18.19	24	24.75	1.25	2.25
F	20	30.5	20.19	24	27	1.25	2.33
F	22	33	22.19	24	29.25	1.25	2.5
F	24	36	24.19	24	32	1.5	2.69
F	26	38.25	—	28	34.5	1.75	3
F	28	40.75	—	28	37	1.75	3.13
F	30	43	—	28	39.25	1.75	3.15
F	32	45.25	—	28	41.5	1.75	3.25
F	34	47.5	—	28	43.5	1.75	3.38
F	36	50	—	32	46	2	3.46
F	38	52.25	—	32	48	2	3.5
F	40	54.25	—	36	50.25	2	3.63
F	42	57	—	36	52.75	2	3.81
F	44	59.25	—	36	55	2	4
F	46	61.5	—	40	57.25	2	4.13
F	48	65	—	40	60.75	2	4.5

Tbl. 4.F.1

Notes:

Refer to ANSI/AWWA C207 for notes, design pressures, and additional minimum design requirements.
Any column with "-" could relate to a note in the Standard or not be covered in the standard.
Data columns from the reference standard may have been omitted
All units are inches

Flanges per ASME B16.1 (Class 25, 125, 250)

ASME	Flange Class	Nominal Pipe Size (NPS)	Diameter Flange (O)	Min Thickness Flange (Q)	Hub- Min Diameter (X)	Hub- Min Length (Y)	Hub- Min Thread Length (T)	Raised Face Diameter (W)	Bolting- # of Bolts	Bolt Hole- Diameter Bolt Circle	Bolt Hole- Diameter Bolt Holes	Bolting- Bolt Diameter	Bolting- Length of Bolts	Bolting- Length of Stud Bolts
16.1	25	4	9	0.75	5.31	1.31	…	…	8	7.5	3/4	5/8	2.5	…
16.1	25	5	10	0.75	6.44	1.44	…	…	8	8.5	3/4	5/8	2.5	…
16.1	25	6	11	0.75	7.56	1.56	…	…	8	9.5	3/4	5/8	2.5	…
16.1	25	8	13.5	0.75	9.69	1.75	…	…	8	11.75	3/4	5/8	2.5	…
16.1	25	10	16	0.88	11.94	1.94	…	…	12	14.25	3/4	5/8	3	…
16.1	25	12	19	1	14.06	2.19	…	…	12	17	3/4	5/8	3	…
16.1	25	14	21	1.12	15.37	2.25	…	…	12	18.75	7/8	3/4	3.5	…
16.1	25	16	23.5	1.12	17.5	2.5	…	…	16	21.25	7/8	3/4	3.5	…
16.1	25	18	25	1.25	19.62	2.69	…	…	16	22.75	7/8	3/4	4	…
16.1	25	20	27.5	1.25	21.75	2.88	…	…	20	25	7/8	3/4	4	…
16.1	25	24	32	1.38	26	3.25	…	…	20	29.5	7/8	3/4	4	…
16.1	25	30	38.75	1.5	…	…	…	…	28	36	1	7/8	4.5	…
16.1	25	36	46	1.62	…	…	…	…	32	42.75	1	7/8	5	…
16.1	25	42	53	1.75	…	…	…	…	36	49.5	1 1/8	1	5.5	…
16.1	25	48	59.5	2	…	…	…	…	44	56	1 1/8	1	6	…
16.1	25	54	66.25	2.25	…	…	…	…	44	62.75	1 1/8	1	6.5	…
16.1	25	60	73	2.25	…	…	…	…	52	69.25	1 1/4	1 1/8	6.5	…
16.1	25	72	86.5	2.5	…	…	…	…	60	82.5	1 1/4	1 1/8	7	…
16.1	25	84	99.75	2.75	…	…	…	…	64	95.5	1 3/8	1 1/4	7.5	…
16.1	25	96	113.25	3	…	…	…	…	68	108.5	1 3/8	1 1/4	8	…
16.1	125	1	4.25	0.44	1.94	0.69	…	…	4	3.12	5/8	1/2	2	…
16.1	125	1 1/4	4.62	0.5	2.31	0.81	…	…	4	3.5	5/8	1/2	2	…
16.1	125	1 1/2	5	0.56	2.56	0.88	…	…	4	3.88	5/8	1/2	2	…
16.1	125	2	6	0.62	3.06	1	…	…	4	4.75	3/4	5/8	2.5	…
16.1	125	2 1/2	7	0.69	3.56	1.12	…	…	4	5.5	3/4	5/8	2.5	…
16.1	125	3	7.5	0.75	4.25	1.19	…	…	4	6	3/4	5/8	2.5	…
16.1	125	3 1/2	8.5	0.81	4.81	1.25	…	…	8	7	3/4	5/8	3	…
16.1	125	4	9	0.94	5.31	1.31	…	…	8	7.5	3/4	5/8	3	…
16.1	125	5	10	0.94	6.44	1.44	…	…	8	8.5	7/8	3/4	3	…
16.1	125	6	11	1	7.56	1.56	…	…	8	9.5	7/8	3/4	3.5	…
16.1	125	8	13.5	1.12	9.69	1.75	…	…	8	11.75	7/8	3/4	3.5	…
16.1	125	10	16	1.19	11.94	1.94	…	…	12	14.25	1	7/8	4	…
16.1	125	12	19	1.25	14.06	2.19	…	…	12	17	1	7/8	4	…
16.1	125	14	14	1.38	15.38	2.25	…	…	12	18.75	1 1/8	1	4.5	…
16.1	125	16	23.5	1.44	17.5	2.5	…	…	16	21.25	1 1/8	1	4.5	…
16.1	125	18	25	1.56	19.62	2.69	…	…	16	22.75	1 1/4	1 1/8	5	…
16.1	125	20	27.5	1.69	21.75	2.88	…	…	20	25	1 1/4	1 1/8	5	…
16.1	125	24	32	1.88	26	3.25	…	…	20	29.5	1 3/8	1 1/4	5.5	…
16.1	125	30	38.75	2.12	…	…	…	…	28	36	1 3/8	1 1/4	6.5	…
16.1	125	36	46	2.38	…	…	…	…	32	42.75	1 5/8	1 1/2	7	9
16.1	125	42	53	2.62	…	…	…	…	36	49.5	1 5/8	1 1/2	7.5	9.5
16.1	125	48	59.5	2.75	…	…	…	…	44	56	1 5/8	1 1/2	8	9.5
16.1	125	54 (-)	66.25	3	…	…	…	…	44	62.75	2	1 3/4	8.5	10.5
16.1	125	60 (-)	73	3.12	…	…	…	…	52	69.25	2	1 3/4	9	11
16.1	125	66 (-)	80	3.38	…	…	…	…	52	76	2	1 3/4	9.5	11.5
16.1	125	72 (-)	86.5	3.5	…	…	…	…	60	82.5	2	1 3/4	9.5	11.5
16.1	125	78 (-)	93	3.75	…	…	…	…	64	89	2 1/4	2	10.5	12.5
16.1	125	84 (-)	99.75	3.88	…	…	…	…	64	95.5	2 1/4	2	10.5	13
16.1	125	90 (-)	106.5	4.12	…	…	…	…	68	102	2 1/2	2 1/4	11.5	14
16.1	125	96 (-)	113.25	4.25	…	…	…	…	68	108.5	2 1/2	2 1/4	11.5	14
16.1	250	1	4.88	0.69	2.06	0.88	0.68	2.69	4	3.5	3/4	5/8	2.5	…
16.1	250	1 1/4	5.25	0.75	2.5	1	0.81	3.06	4	3.88	3/4	5/8	2.5	…
16.1	250	1 1/2	6.12	0.81	2.75	1.12	0.87	3.56	4	4.5	7/8	3/4	3	…
16.1	250	2	6.5	0.88	3.31	1.25	1	4.19	8	5	3/4	5/8	3	…
16.1	250	2 1/2	7.5	1	3.94	1.43	1.13	4.94	8	5.88	7/8	3/4	3.5	…
16.1	250	3	8.25	1.12	4.62	1.56	1.19	5.69	8	6.62	7/8	3/4	3.5	…
16.1	250	3 1/2	9	1.19	5.25	1.62	1.25	6.31	8	7.25	7/8	3/4	3.5	…
16.1	250	4	10	1.25	5.75	1.75	1.31	6.94	8	7.88	7/8	3/4	4	…
16.1	250	5	11	1.38	7	1.88	1.44	8.31	8	9.25	7/8	3/4	4	…
16.1	250	6	12.5	1.44	8.12	1.94	1.56	9.69	12	10.62	7/8	3/4	4	…
16.1	250	8	15	1.62	10.25	2.19	1.75	11.94	12	13	1 1/8	7/8	4.5	…
16.1	250	10	17.5	1.88	12.62	2.38	1.94	14.06	16	15.25	1 1/4	1	5.5	…
16.1	250	12	20.5	2	14.75	2.56	2.19	16.44	16	17.75	1 1/4	1 1/8	5.5	…
16.1	250	14	23	2.12	16.25	2.69	2.25	18.94	20	20.25	1 3/8	1 1/8	6	…
16.1	250	16	25	2.25	18.38	2.88	2.5	21.06	20	22.5	1 3/8	1 1/4	6.5	…
16.1	250	18	28	2.38	…	…	…	23.31	24	24.75	1 3/8	1 1/4	6.5	…
16.1	250	20	30.5	2.5	…	…	…	25.56	24	27	1 3/8	1 1/4	7	…
16.1	250	24	36	2.75	…	…	…	30.31	24	32	1 5/8	1 1/2	7.5	9.5
16.1	250	30	43	3	…	…	…	37.19	28	39.25	2	1 3/4	8.5	10.5
16.1	250	36 (-)	50	3.38	…	…	…	43.69	32	46	2 1/4	2	9.5	12
16.1	250	42 (-)	57	3.69	…	…	…	50.44	36	52.75	2 1/4	2	10	12.5
16.1	250	48 (-)	65	4	…	…	…	58.44	40	60.75	2 1/4	2	11	13

ASME	Flange Class	Nominal Pipe Size (NPS)	Diameter Flange (O)	Min Thickness Flange (Q)	Hub- Min Diameter (X)	Hub- Min Length (Y)	Hub- Min Thread Length (T)	Raised Face Diameter (W)	Bolting- # of Bolts	Bolt Hole- Diameter Bolt Circle	Bolt Hole- Diameter Bolt Holes	Bolting- Bolt Diameter	Bolting- Length of Bolts	Bolting- Length of Stud Bolts
16.1	25	4	230	19	135	33	…	…	8	191	19	15 7/8	64	…
16.1	25	5	255	19	164	37	…	…	8	216	19	15 7/8	64	…
16.1	25	6	280	19	192	40	…	…	8	241	19	15 7/8	64	…
16.1	25	8	345	19	246	45	…	…	8	299	19	15 7/8	64	…
16.1	25	10	405	22.2	303	49	…	…	12	368	19	15 7/8	70	…
16.1	25	12	485	25.4	357	56	…	…	12	432	19	15 7/8	76	…
16.1	25	14	535	28.6	391	57	…	…	12	476	22 2/9	19	89	…
16.1	25	16	595	28.6	445	64	…	…	16	540	22 2/9	19	89	…
16.1	25	18	635	31.8	498	68	…	…	16	578	22 2/9	19	95	…
16.1	25	20	700	31.8	552	78	…	…	20	635	22 2/9	19	95	…
16.1	25	24	815	34.9	560	83	…	…	20	749	22 2/9	19	102	…
16.1	25	30	985	38.1	…	…	…	…	28	914	25 2/5	22 2/9	114	…
16.1	25	36	1170	41.3	…	…	…	…	32	1085	25 2/5	22 2/9	121	…
16.1	25	42	1345	44.5	…	…	…	…	36	1257	28 4/7	25 2/5	133	…
16.1	25	48	1510	50.8	…	…	…	…	44	1422	28 4/7	25 2/5	146	…
16.1	25	54	1685	57.2	…	…	…	…	44	1594	28 4/7	25 2/5	159	…
16.1	25	60	1855	57.2	…	…	…	…	52	1759	31 3/4	28 4/7	159	…
16.1	25	72	2195	63.5	…	…	…	…	60	2095	31 3/4	28 4/7	172	…
16.1	25	84	2535	69.9	…	…	…	…	64	2425	35	31 3/4	191	…
16.1	25	96	2875	76.2	…	…	…	…	68	2756	35	31 3/4	203	…
16.1	125	1	110	11.1	49	18	…	…	4	79	15 7/8	12 2/3	45	…
16.1	125	1 1/4	115	12.7	59	21	…	…	4	89	15 7/8	12 2/3	51	…
16.1	125	1 1/2	125	14.3	65	22	…	…	4	98	15 7/8	12 2/3	51	…
16.1	125	2	150	15.9	78	25	…	…	4	121	19	15 7/8	57	…
16.1	125	2 1/2	180	17.5	91	29	…	…	4	140	19	15 7/8	64	…
16.1	125	3	190	19	108	30	…	…	4	152	19	15 7/8	64	…
16.1	125	3 1/2	215	20.6	122	32	…	…	8	178	19	15 7/8	70	…
16.1	125	4	230	23.8	135	33	…	…	8	191	19	15 7/8	76	…
16.1	125	5	255	23.8	164	37	…	…	8	216	22 2/9	19	76	…
16.1	125	6	280	25.4	192	40	…	…	8	241	22 2/9	19	83	…
16.1	125	8	345	28.6	246	45	…	…	8	299	22 2/9	19	89	…
16.1	125	10	405	30.2	303	49	…	…	12	362	25 2/5	22 2/9	95	…
16.1	125	12	485	31.8	357	56	…	…	12	432	25 2/5	22 2/9	95	…
16.1	125	14	535	35.1	391	57	…	…	12	476	28 4/7	25 2/5	108	…
16.1	125	16	595	36.5	445	64	…	…	16	540	28 4/7	25 2/5	114	…
16.1	125	18	635	39.7	499	68	…	…	16	578	31 3/4	28 4/7	121	…
16.1	125	20	700	42.9	553	73	…	…	20	635	31 3/4	28 4/7	127	…
16.1	125	24	815	47.6	660	83	…	…	20	749	35	31 3/4	140	…
16.1	125	30	985	54	…	…	…	…	28	914	35	31 3/4	159	…
16.1	125	36	1170	60.3	…	…	…	…	32	1086	41 2/7	38	178	222
16.1	125	42	1345	66.7	…	…	…	…	36	1257	41 2/7	38	191	235
16.1	125	48	1510	69.9	…	…	…	…	44	1422	41 2/7	38	197	242
16.1	125	54 (-)	1685	76.2	…	…	…	…	44	1594	50 4/5	44 4/9	216	267
16.1	125	60 (-)	1855	79.4	…	…	…	…	52	1759	50 4/5	44 4/9	222	273
16.1	125	66 (-)	2032	85.7	…	…	…	…	52	1930	50 4/5	44 4/9	241	292
16.1	125	72 (-)	2195	88.9	…	…	…	…	60	2096	50 4/5	44 4/9	241	292
16.1	125	78 (-)	2365	95.3	…	…	…	…	64	2261	57 1/7	50 4/5	267	318
16.1	125	84 (-)	2535	98.4	…	…	…	…	64	2426	57 1/7	50 4/5	267	324
16.1	125	90 (-)	2720	104.6	…	…	…	…	68	2591	63 1/2	57 1/7	292	357
16.1	125	96 (-)	2875	108	…	…	…	…	68	2756	63 1/2	57 1/7	292	356
16.1	250	1	125	17.5	52	22	18	68	4	89	19	15 3/4	64	…
16.1	250	1 1/4	135	19	64	25	19	78	4	98	19	15 3/4	64	…
16.1	250	1 1/2	155	20.6	70	29	22	91	4	114	22 2/9	19	70	…
16.1	250	2	165	22.2	84	32	25	106	8	127	19	15 3/4	70	…
16.1	250	2 1/2	190	25.4	100	37	29	125	8	149	22 2/9	19	83	…
16.1	250	3	210	28.6	118	40	31	144	8	168	22 2/9	19	89	…
16.1	250	3 1/2	230	30.2	133	41	32	160	8	184	22 2/9	19	89	…
16.1	250	4	255	31.8	146	44	33	176	8	200	22 2/9	19	95	…
16.1	250	5	280	34.9	178	48	36	211	8	235	22 2/9	19	102	…
16.1	250	6	320	36.5	206	49	39	246	12	270	22 2/9	19	102	…
16.1	250	8	380	41.3	260	56	43	303	12	330	28 4/7	22 1/3	114	…
16.1	250	10	445	47.6	321	60	49	357	16	387	31 3/4	25 2/5	131	…
16.1	250	12	520	50.8	375	65	54	418	16	451	31 3/4	28 4/9	140	…
16.1	250	14	585	54	413	68	57	481	20	514	35	28 4/9	152	…
16.1	250	16	650	57.2	467	73	62	535	20	572	35	31 3/4	159	…
16.1	250	18	710	60.3	…	…	…	592	24	629	35	31 3/4	165	…
16.1	250	20	775	63.5	…	…	…	649	24	686	35	31 3/4	172	…
16.1	250	24	915	69.8	…	…	…	770	24	813	41 2/7	38	191	241
16.1	250	30	1090	76.2	…	…	…	945	28	997	50 4/5	44 4/9	216	268
16.1	250	36 (-)	1270	85.7	…	…	…	1110	32	1168	57 1/7	50 4/5	241	298
16.1	250	42 (-)	1450	93.7	…	…	…	1281	36	1340	57 1/7	50 4/5	254	318
16.1	250	48 (-)	1650	101.6	…	…	…	1484	40	1543	57 1/7	50 4/5	273	330

Tbl. 4.F.2

Notes:

Refer to ANSI/ASME B16.1 for notes, pressures, and minimum design requirements.
Any column with "-" relate to a note in the standard or may not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are millimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Threaded Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thread Length Threaded (T)	Min Counterbore Threaded Flange (Q)
ASME 16.5	150	1/2	3.5	2.38	5/8	4	1/2	2.25	2	1.19	0.62	-
ASME 16.5	150	3/4	3.88	2.75	5/8	4	1/2	2.5	2	1.5	0.62	-
ASME 16.5	150	1	4.25	3.12	5/8	4	1/2	2.5	2.25	1.94	0.69	-
ASME 16.5	150	1 1/4	4.62	3.5	5/8	4	1/2	2.75	2.25	2.31	0.81	-
ASME 16.5	150	1 1/2	5	3.88	5/8	4	1/2	2.75	2.5	2.56	0.88	-
ASME 16.5	150	2	6	4.75	3/4	4	5/8	3.25	2.75	3.06	1	-
ASME 16.5	150	2 1/2	7	5.5	3/4	4	5/8	3.5	3	3.56	1.12	-
ASME 16.5	150	3	7.5	6	3/4	4	5/8	3.5	3	4.25	1.19	-
ASME 16.5	150	3 1/2	8.5	7	3/4	8	5/8	3.5	3	4.81	1.25	-
ASME 16.5	150	4	9	7.5	3/4	8	5/8	3.5	3	5.31	1.31	-
ASME 16.5	150	5	10	8.5	7/8	8	3/4	3.75	3.25	6.44	1.44	-
ASME 16.5	150	6	11	9.5	7/8	8	3/4	4	3.25	7.56	1.56	-
ASME 16.5	150	8	13.5	11.75	7/8	8	3/4	4.25	3.5	9.69	1.75	-
ASME 16.5	150	10	16	14.25	1	12	7/8	4.5	4	12	1.94	-
ASME 16.5	150	12	19	17	1	12	7/8	4.75	4	14.38	2.19	-
ASME 16.5	150	14	21	18.75	1 1/8	12	1	5.25	4.5	15.75	2.25	-
ASME 16.5	150	16	23.5	21.25	1 1/8	16	1	5.25	4.5	18	2.5	-
ASME 16.5	150	18	25	22.75	1 1/4	16	1 1/8	5.75	5	19.88	2.69	-
ASME 16.5	150	20	27.5	25	1 1/4	20	1 1/8	6.25	5.5	22	2.88	-
ASME 16.5	150	22	29.5	27.25	1 3/8	20	1 1/4	6.75	6	24	3.13	-
ASME 16.5	150	24	32	29.5	1 3/8	20	1 1/4	6.75	6	26.12	3.25	-
ASME 16.5	300	1/2	3.75	2.62	5/8	4	1/2	2.5	2.25	1.5	0.62	0.93
ASME 16.5	300	3/4	4.62	3.25	3/4	4	5/8	3	2.5	1.88	0.62	1.14
ASME 16.5	300	1	4.88	3.5	3/4	4	5/8	3	2.5	2.12	0.69	1.41
ASME 16.5	300	1 1/4	5.25	3.88	3/4	4	5/8	3.25	2.75	2.5	0.81	1.75
ASME 16.5	300	1 1/2	6.12	4.5	7/8	4	3/4	3.5	3	2.75	0.88	1.98
ASME 16.5	300	2	6.5	5	3/4	8	5/8	3.5	3	3.31	1.12	2.5
ASME 16.5	300	2 1/2	7.5	5.88	7/8	8	3/4	4	3.25	3.94	1.25	3
ASME 16.5	300	3	8.25	6.62	7/8	8	3/4	4.25	3.5	4.62	1.25	3.63
ASME 16.5	300	3 1/2	9	7.25	7/8	8	3/4	4.25	3.75	5.25	1.44	4.13
ASME 16.5	300	4	10	7.88	7/8	8	3/4	4.5	3.75	5.75	1.44	4.63
ASME 16.5	300	5	11	9.25	7/8	8	3/4	4.75	4.25	7	1.69	5.69
ASME 16.5	300	6	12.5	10.62	7/8	12	3/4	4.75	4.25	8.12	1.81	6.75
ASME 16.5	300	8	15	13	1	12	7/8	5.5	4.75	10.25	2	8.75
ASME 16.5	300	10	17.5	15.25	1 1/8	16	1	6.25	5.5	12.62	2.19	10.88
ASME 16.5	300	12	20.5	17.75	1 1/4	16	1 1/8	6.75	5.75	14.75	2.38	12.94
ASME 16.5	300	14	23	20.25	1 1/4	20	1 1/8	7	6.25	16.75	2.5	14.19
ASME 16.5	300	16	25.5	22.5	1 3/8	20	1 1/4	7.5	6.5	19	2.69	16.19
ASME 16.5	300	18	28	24.75	1 3/8	24	1 1/4	7.75	6.75	21	2.75	18.19
ASME 16.5	300	20	30.5	27	1 3/8	24	1 1/4	8	7.25	23.12	2.88	20.19
ASME 16.5	300	22	33	29.25	1 5/8	24	1 1/2	9	8	25.25	…	…
ASME 16.5	300	24	36	32	1 5/8	24	1 1/2	9	8	27.62	3.25	24.19

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thread Length Threaded (T)	Min Counterbore Threaded Flange (Q)
ASME 16.5	150	1/2	89	60.5	15 7/8	4	12 2/3	55	50	30	16	-
ASME 16.5	150	3/4	99	69.8	15 7/8	4	12 2/3	65	50	38	16	-
ASME 16.5	150	1	108	79.2	15 7/8	4	12 2/3	65	55	49	18	-
ASME 16.5	150	1 1/4	117	88.9	15 7/8	4	12 2/3	70	55	59	21	-
ASME 16.5	150	1 1/2	127	98.6	15 7/8	4	12 2/3	70	65	65	22	-
ASME 16.5	150	2	152	120.6	19	4	15 7/8	85	70	78	25	-
ASME 16.5	150	2 1/2	178	139.7	19	4	15 7/8	90	75	90	28	-
ASME 16.5	150	3	190	152.4	19	4	15 7/8	90	75	108	30	-
ASME 16.5	150	3 1/2	216	177.8	19	8	15 7/8	90	75	122	32	-
ASME 16.5	150	4	229	190.5	19	8	15 7/8	90	75	135	33	-
ASME 16.5	150	5	254	215.9	22 2/9	8	19	95	85	164	37	-
ASME 16.5	150	6	279	241.3	22 2/9	8	19	100	85	192	40	-
ASME 16.5	150	8	343	298.4	22 2/9	8	19	110	90	246	44	-
ASME 16.5	150	10	406	362	25 2/5	12	22 2/9	115	100	305	49	-
ASME 16.5	150	12	483	431.8	25 2/5	12	22 2/9	120	100	365	56	-
ASME 16.5	150	14	533	476.2	28 4/7	12	25 2/5	135	115	400	57	-
ASME 16.5	150	16	597	539.8	28 4/7	16	25 2/5	135	115	457	64	-
ASME 16.5	150	18	635	577.8	31 3/4	16	28 4/7	145	125	505	68	-
ASME 16.5	150	20	693	635	31 3/4	20	28 4/7	160	140	559	73	-
ASME 16.5	150	22	749	692.2	35	20	31 3/4	170	150	610	80	-
ASME 16.5	150	24	813	749.3	35	20	31 3/4	170	150	663	83	-
ASME 16.5	300	1/2	95	66.5	15 7/8	4	12 2/3	65	55	38	16	23.6
ASME 16.5	300	3/4	117	82.6	19	4	15 7/8	75	65	48	16	29
ASME 16.5	300	1	124	88.9	19	4	15 7/8	75	65	54	18	35.8
ASME 16.5	300	1 1/4	133	98.6	19	4	15 7/8	85	70	64	21	44.4
ASME 16.5	300	1 1/2	155	114.3	22 2/9	4	19	90	75	70	22	50.3
ASME 16.5	300	2	165	127	19	8	15 7/8	90	75	84	28	63.5
ASME 16.5	300	2 1/2	190	149.4	22 2/9	8	19	100	85	100	32	76.2
ASME 16.5	300	3	210	168.1	22 2/9	8	19	110	90	117	32	92.2
ASME 16.5	300	3 1/2	229	184.2	22 2/9	8	19	110	95	133	37	104.9
ASME 16.5	300	4	254	200.2	22 2/9	8	19	115	95	146	37	117.6
ASME 16.5	300	5	279	235	22 2/9	8	19	120	110	178	43	144.5
ASME 16.5	300	6	318	269.7	22 2/9	12	19	120	110	206	46	171.4
ASME 16.5	300	8	381	330.2	25 2/5	12	22 2/9	140	120	260	51	222.2
ASME 16.5	300	10	444	387.4	28 4/7	16	25 2/5	160	140	321	56	276.4
ASME 16.5	300	12	521	450.8	31 3/4	16	28 4/7	170	145	375	60	328.7
ASME 16.5	300	14	584	514.4	31 3/4	20	28 4/7	180	160	425	64	360.4
ASME 16.5	300	16	648	571.5	35	20	31 3/4	190	165	483	68	411.2
ASME 16.5	300	18	711	628.6	35	24	31 3/4	195	170	533	70	462
ASME 16.5	300	20	775	685.8	35	24	31 3/4	205	185	587	73	512.8
ASME 16.5	300	22	838	743	41 2/7	24	38	230	205	641	…	…
ASME 16.5	300	24	914	812.8	41 2/7	24	38	230	205	702	83	614.4

Tbl. 4.F.3

Slip-On Welding Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)
ASME 16.5	150	1/2	3.5	2.38	5/8	4	1/2	2.25	2	1.19
ASME 16.5	150	3/4	3.88	2.75	5/8	4	1/2	2.5	2	1.5
ASME 16.5	150	1	4.25	3.12	5/8	4	1/2	2.5	2.25	1.94
ASME 16.5	150	1 1/4	4.62	3.5	5/8	4	1/2	2.75	2.25	2.31
ASME 16.5	150	1 1/2	5	3.88	5/8	4	1/2	2.75	2.5	2.56
ASME 16.5	150	2	6	4.75	3/4	4	5/8	3.25	2.75	3.06
ASME 16.5	150	2 1/2	7	5.5	3/4	4	5/8	3.5	3	3.56
ASME 16.5	150	3	7.5	6	3/4	4	5/8	3.5	3	4.25
ASME 16.5	150	3 1/2	8.5	7	3/4	8	5/8	3.5	3	4.81
ASME 16.5	150	4	9	7.5	3/4	8	5/8	3.5	3	5.31
ASME 16.5	150	5	10	8.5	7/8	8	3/4	3.75	3.25	6.44
ASME 16.5	150	6	11	9.5	7/8	8	3/4	4	3.25	7.56
ASME 16.5	150	8	13.5	11.75	7/8	8	3/4	4.25	3.5	9.69
ASME 16.5	150	10	16	14.25	1	12	7/8	4.5	4	12
ASME 16.5	150	12	19	17	1	12	7/8	4.75	4	14.38
ASME 16.5	150	14	21	18.75	1 1/8	12	1	5.25	4.5	15.75
ASME 16.5	150	16	23.5	21.25	1 1/8	16	1	5.25	4.5	18
ASME 16.5	150	18	25	22.75	1 1/4	16	1 1/8	5.75	5	19.88
ASME 16.5	150	20	27.5	25	1 1/4	20	1 1/8	6.25	5.5	22
ASME 16.5	150	22	29.5	27.25	1 3/8	20	1 1/4	6.75	6	24
ASME 16.5	150	24	32	29.5	1 3/8	20	1 1/4	6.75	6	26.12
ASME 16.5	300	1/2	3.75	2.62	5/8	4	1/2	2.5	2.25	1.5
ASME 16.5	300	3/4	4.62	3.25	3/4	4	5/8	3	2.5	1.88
ASME 16.5	300	1	4.88	3.5	3/4	4	5/8	3	2.5	2.12
ASME 16.5	300	1 1/4	5.25	3.88	3/4	4	5/8	3.25	2.75	2.5
ASME 16.5	300	1 1/2	6.12	4.5	7/8	4	3/4	3.5	3	2.75
ASME 16.5	300	2	6.5	5	3/4	8	5/8	3.5	3	3.31
ASME 16.5	300	2 1/2	7.5	5.88	7/8	8	3/4	4	3.25	3.94
ASME 16.5	300	3	8.25	6.62	7/8	8	3/4	4.25	3.5	4.62
ASME 16.5	300	3 1/2	9	7.25	7/8	8	3/4	4.25	3.75	5.25
ASME 16.5	300	4	10	7.88	7/8	8	3/4	4.5	3.75	5.75
ASME 16.5	300	5	11	9.25	7/8	8	3/4	4.75	4.25	7
ASME 16.5	300	6	12.5	10.62	7/8	12	3/4	4.75	4.25	8.12
ASME 16.5	300	8	15	13	1	12	7/8	5.5	4.75	10.25
ASME 16.5	300	10	17.5	15.25	1 1/8	16	1	6.25	5.5	12.62
ASME 16.5	300	12	20.5	17.75	1 1/4	16	1 1/8	6.75	5.75	14.75
ASME 16.5	300	14	23	20.25	1 1/4	20	1 1/8	7	6.25	16.75
ASME 16.5	300	16	25.5	22.5	1 3/8	20	1 1/4	7.5	6.5	19
ASME 16.5	300	18	28	24.75	1 3/8	24	1 1/4	7.75	6.75	21
ASME 16.5	300	20	30.5	27	1 3/8	24	1 1/4	8	7.25	23.12
ASME 16.5	300	22	33	29.25	1 5/8	24	1 1/2	9	8	25.25
ASME 16.5	300	24	36	32	1 5/8	24	1 1/2	9	8	27.62

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)
ASME 16.5	150	1/2	89	60.5	15 7/8	4	12 2/3	55	50	30
ASME 16.5	150	3/4	99	69.8	15 7/8	4	12 2/3	65	50	38
ASME 16.5	150	1	108	79.2	15 7/8	4	12 2/3	65	55	49
ASME 16.5	150	1 1/4	117	88.9	15 7/8	4	12 2/3	70	55	59
ASME 16.5	150	1 1/2	127	98.6	15 7/8	4	12 2/3	70	65	65
ASME 16.5	150	2	152	120.6	19	4	15 7/8	85	70	78
ASME 16.5	150	2 1/2	178	139.7	19	4	15 7/8	90	75	90
ASME 16.5	150	3	190	152.4	19	4	15 7/8	90	75	108
ASME 16.5	150	3 1/2	216	177.8	19	8	15 7/8	90	75	122
ASME 16.5	150	4	229	190.5	19	8	15 7/8	90	75	135
ASME 16.5	150	5	254	215.9	22 2/9	8	19	95	85	164
ASME 16.5	150	6	279	241.3	22 2/9	8	19	100	85	192
ASME 16.5	150	8	343	298.4	22 2/9	8	19	110	90	246
ASME 16.5	150	10	406	362	25 2/5	12	22 2/9	115	100	305
ASME 16.5	150	12	483	431.8	25 2/5	12	22 2/9	120	100	365
ASME 16.5	150	14	533	476.2	28 4/7	12	25 2/5	135	115	400
ASME 16.5	150	16	597	539.8	28 4/7	16	25 2/5	135	115	457
ASME 16.5	150	18	635	577.8	31 3/4	16	28 4/7	145	125	505
ASME 16.5	150	20	693	635	31 3/4	20	28 4/7	160	140	559
ASME 16.5	150	22	749	692.2	35	20	31 3/4	170	150	610
ASME 16.5	150	24	813	749.3	35	20	31 3/4	170	150	663
ASME 16.5	300	1/2	95	66.5	15 7/8	4	12 2/3	65	55	38
ASME 16.5	300	3/4	117	82.6	19	4	15 7/8	75	65	48
ASME 16.5	300	1	124	88.9	19	4	15 7/8	75	65	54
ASME 16.5	300	1 1/4	133	98.6	19	4	15 7/8	85	70	64
ASME 16.5	300	1 1/2	155	114.3	22 2/9	4	19	90	75	70
ASME 16.5	300	2	165	127	19	8	15 7/8	90	75	84
ASME 16.5	300	2 1/2	190	149.4	22 2/9	8	19	100	85	100
ASME 16.5	300	3	210	168.1	22 2/9	8	19	110	90	117
ASME 16.5	300	3 1/2	229	184.2	22 2/9	8	19	110	95	133
ASME 16.5	300	4	254	200.2	22 2/9	8	19	115	95	146
ASME 16.5	300	5	279	235	22 2/9	8	19	120	110	178
ASME 16.5	300	6	318	269.7	22 2/9	12	19	120	110	206
ASME 16.5	300	8	381	330.2	25 2/5	12	22 2/9	140	120	260
ASME 16.5	300	10	444	387.4	28 4/7	16	25 2/5	160	140	321
ASME 16.5	300	12	521	450.8	31 3/4	16	28 4/7	170	145	375
ASME 16.5	300	14	584	514.4	31 3/4	20	28 4/7	180	160	425
ASME 16.5	300	16	648	571.5	35	20	31 3/4	190	165	483
ASME 16.5	300	18	711	628.6	35	24	31 3/4	195	170	533
ASME 16.5	300	20	775	685.8	35	24	31 3/4	205	185	587
ASME 16.5	300	22	838	743	41 2/7	24	38	230	205	641
ASME 16.5	300	24	914	812.8	41 2/7	24	38	230	205	702

Tbl. 4.F.4

Socket Welding (NPS 1/2 to 3 Only) Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Depth of socket (D)
ASME 16.5	150	1/2	3.5	2.38	5/8	4	1/2	2.25	2	1.19	0.38
ASME 16.5	150	3/4	3.88	2.75	5/8	4	1/2	2.5	2	1.5	0.44
ASME 16.5	150	1	4.25	3.12	5/8	4	1/2	2.5	2.25	1.94	0.5
ASME 16.5	150	1 1/4	4.62	3.5	5/8	4	1/2	2.75	2.25	2.31	0.56
ASME 16.5	150	1 1/2	5	3.88	5/8	4	1/2	2.75	2.5	2.56	0.62
ASME 16.5	150	2	6	4.75	3/4	4	5/8	3.25	2.75	3.06	0.69
ASME 16.5	150	2 1/2	7	5.5	3/4	4	5/8	3.5	3	3.56	0.75
ASME 16.5	150	3	7.5	6	3/4	4	5/8	3.5	3	4.25	0.81
ASME 16.5	150	3 1/2	8.5	7	3/4	8	5/8	3.5	3	4.81	0.88
ASME 16.5	150	4	9	7.5	3/4	8	5/8	3.5	3	5.31	0.94
ASME 16.5	150	5	10	8.5	7/8	8	3/4	3.75	3.25	6.44	0.94
ASME 16.5	150	6	11	9.5	7/8	8	3/4	4	3.25	7.56	1.6
ASME 16.5	150	8	13.5	11.75	7/8	8	3/4	4.25	3.5	9.69	1.25
ASME 16.5	150	10	16	14.25	1	12	7/8	4.5	4	12	1.31
ASME 16.5	150	12	19	17	1	12	7/8	4.75	4	14.38	1.56
ASME 16.5	150	14	21	18.75	1 1/8	12	1	5.25	4.5	15.75	1.63
ASME 16.5	150	16	23.5	21.25	1 1/8	16	1	5.25	4.5	18	1.75
ASME 16.5	150	18	25	22.75	1 1/4	16	1 1/8	5.75	5	19.88	1.94
ASME 16.5	150	20	27.5	25	1 1/4	20	1 1/8	6.25	5.5	22	2.13
ASME 16.5	150	22	29.5	27.25	1 3/8	20	1 1/4	6.75	6	24	2.38
ASME 16.5	150	24	32	29.5	1 3/8	20	1 1/4	6.75	6	26.12	2.5
ASME 16.5	300	1/2	3.75	2.62	5/8	4	1/2	2.5	2.25	1.5	0.38
ASME 16.5	300	3/4	4.62	3.25	3/4	4	5/8	3	2.5	1.88	0.44
ASME 16.5	300	1	4.88	3.5	3/4	4	5/8	3	2.5	2.12	0.5
ASME 16.5	300	1 1/4	5.25	3.88	3/4	4	5/8	3.25	2.75	2.5	0.56
ASME 16.5	300	1 1/2	6.12	4.5	7/8	4	3/4	3.5	3	2.75	0.62
ASME 16.5	300	2	6.5	5	3/4	8	5/8	3.5	3	3.31	0.69
ASME 16.5	300	2 1/2	7.5	5.88	7/8	8	3/4	4	3.25	3.94	0.75
ASME 16.5	300	3	8.25	6.62	7/8	8	3/4	4.25	3.5	4.62	0.81
ASME 16.5	300	3 1/2	9	7.25	7/8	8	3/4	4.25	3.75	5.25	…
ASME 16.5	300	4	10	7.88	7/8	8	3/4	4.5	3.75	5.75	…
ASME 16.5	300	5	11	9.25	7/8	8	3/4	4.75	4.25	7	…
ASME 16.5	300	6	12.5	10.62	7/8	12	3/4	4.75	4.25	8.12	…
ASME 16.5	300	8	15	13	1	12	7/8	5.5	4.75	10.25	…
ASME 16.5	300	10	17.5	15.25	1 1/8	16	1	6.25	5.5	12.62	…
ASME 16.5	300	12	20.5	17.75	1 1/4	16	1 1/8	6.75	5.75	14.75	…
ASME 16.5	300	14	23	20.25	1 1/4	20	1 1/8	7	6.25	16.75	…
ASME 16.5	300	16	25.5	22.5	1 3/8	20	1 1/4	7.5	6.5	19	…
ASME 16.5	300	18	28	24.75	1 3/8	24	1 1/4	7.75	6.75	21	…
ASME 16.5	300	20	30.5	27	1 3/8	24	1 1/4	8	7.25	23.12	…
ASME 16.5	300	22	33	29.25	1 5/8	24	1 1/2	9	8	25.25	…
ASME 16.5	300	24	36	32	1 5/8	24	1 1/2	9	8	27.62	…

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Depth of socket (D)
ASME 16.5	150	1/2	89	60.5	15 7/8	4	12 2/3	55	50	30	10
ASME 16.5	150	3/4	99	69.8	15 7/8	4	12 2/3	65	50	38	11
ASME 16.5	150	1	108	79.2	15 7/8	4	12 2/3	65	55	49	13
ASME 16.5	150	1 1/4	117	88.9	15 7/8	4	12 2/3	70	55	59	14
ASME 16.5	150	1 1/2	127	98.6	15 7/8	4	12 2/3	70	65	65	16
ASME 16.5	150	2	152	120.6	19	4	15 7/8	85	70	78	18
ASME 16.5	150	2 1/2	178	139.7	19	4	15 7/8	90	75	90	19
ASME 16.5	150	3	190	152.4	19	4	15 7/8	90	75	108	21
ASME 16.5	150	3 1/2	216	177.8	19	8	15 7/8	90	75	122	22.35
ASME 16.5	150	4	229	190.5	19	8	15 7/8	90	75	135	23.88
ASME 16.5	150	5	254	215.9	22 2/9	8	19	95	85	164	23.88
ASME 16.5	150	6	279	241.3	22 2/9	8	19	100	85	192	40.64
ASME 16.5	150	8	343	298.4	22 2/9	8	19	110	90	246	31.75
ASME 16.5	150	10	406	362	25 2/5	12	22 2/9	115	100	305	33.27
ASME 16.5	150	12	483	431.8	25 2/5	12	22 2/9	120	100	365	39.62
ASME 16.5	150	14	533	476.2	28 4/7	12	25 2/5	135	115	400	41.4
ASME 16.5	150	16	597	539.8	28 4/7	16	25 2/5	135	115	457	44.45
ASME 16.5	150	18	635	577.8	31 3/4	16	28 4/7	145	125	505	49.28
ASME 16.5	150	20	693	635	31 3/4	20	28 4/7	160	140	559	54.1
ASME 16.5	150	22	749	692.2	35	20	31 3/4	170	150	610	60.45
ASME 16.5	150	24	813	749.3	35	20	31 3/4	170	150	663	63.5
ASME 16.5	300	1/2	95	66.5	15 7/8	4	12 2/3	65	55	38	10
ASME 16.5	300	3/4	117	82.6	19	4	15 7/8	75	65	48	11
ASME 16.5	300	1	124	88.9	19	4	15 7/8	75	65	54	13
ASME 16.5	300	1 1/4	133	98.6	19	4	15 7/8	85	70	64	14
ASME 16.5	300	1 1/2	155	114.3	22 2/9	4	19	90	75	70	16
ASME 16.5	300	2	165	127	19	8	15 7/8	90	75	84	17
ASME 16.5	300	2 1/2	190	149.4	22 2/9	8	19	100	85	100	19
ASME 16.5	300	3	210	168.1	22 2/9	8	19	110	90	117	21
ASME 16.5	300	3 1/2	229	184.2	22 2/9	8	19	110	95	133	…
ASME 16.5	300	4	254	200.2	22 2/9	8	19	115	95	146	…
ASME 16.5	300	5	279	235	22 2/9	8	19	120	110	178	…
ASME 16.5	300	6	318	269.7	22 2/9	12	19	120	110	206	…
ASME 16.5	300	8	381	330.2	25 2/5	12	22 2/9	140	120	260	…
ASME 16.5	300	10	444	387.4	28 4/7	16	25 2/5	160	140	321	…
ASME 16.5	300	12	521	450.8	31 3/4	16	28 4/7	170	145	375	…
ASME 16.5	300	14	584	514.4	31 3/4	20	28 4/7	180	160	425	…
ASME 16.5	300	16	648	571.5	35	20	31 3/4	190	165	483	…
ASME 16.5	300	18	711	628.6	35	24	31 3/4	195	170	533	…
ASME 16.5	300	20	775	685.8	35	24	31 3/4	205	185	587	…
ASME 16.5	300	22	838	743	41 2/7	24	38	230	205	641	…
ASME 16.5	300	24	914	812.8	41 2/7	24	38	230	205	702	…

Tbl. 4.F.5

Welding Neck Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Diameter Beginning Chamfer Weld Neck (A)	Length Through Hub Bore Weld Neck (Y3)
ASME 16.5	150	1/2	3.5	2.38	5/8	4	1/2	2.25	2	1.19	0.84	1.81
ASME 16.5	150	3/4	3.88	2.75	5/8	4	1/2	2.5	2	1.5	1.05	2
ASME 16.5	150	1	4.25	3.12	5/8	4	1/2	2.5	2.25	1.94	1.32	2.12
ASME 16.5	150	1 1/4	4.62	3.5	5/8	4	1/2	2.75	2.25	2.31	1.66	2.19
ASME 16.5	150	1 1/2	5	3.88	5/8	4	1/2	2.75	2.5	2.56	1.9	2.83
ASME 16.5	150	2	6	4.75	3/4	4	5/8	3.25	2.75	3.06	2.38	2.44
ASME 16.5	150	2 1/2	7	5.5	3/4	4	5/8	3.5	3	3.56	2.88	2.69
ASME 16.5	150	3	7.5	6	3/4	4	5/8	3.5	3	4.25	3.5	2.69
ASME 16.5	150	3 1/2	8.5	7	3/4	8	5/8	3.5	3	4.81	4	2.75
ASME 16.5	150	4	9	7.5	3/4	8	5/8	3.5	3	5.31	4.5	2.94
ASME 16.5	150	5	10	8.5	7/8	8	3/4	3.75	3.25	6.44	5.56	3.44
ASME 16.5	150	6	11	9.5	7/8	8	3/4	4	3.25	7.56	6.63	3.44
ASME 16.5	150	8	13.5	11.75	7/8	8	3/4	4.25	3.5	9.69	8.63	3.94
ASME 16.5	150	10	16	14.25	1	12	7/8	4.5	4	12	10.75	3.94
ASME 16.5	150	12	19	17	1	12	7/8	4.75	4	14.38	12.75	4.44
ASME 16.5	150	14	21	18.75	1 1/8	12	1	5.25	4.5	15.75	14	4.94
ASME 16.5	150	16	23.5	21.25	1 1/8	16	1	5.25	4.5	18	16	4.94
ASME 16.5	150	18	25	22.75	1 1/4	16	1 1/8	5.75	5	19.88	18	5.44
ASME 16.5	150	20	27.5	25	1 1/4	20	1 1/8	6.25	5.5	22	20	5.62
ASME 16.5	150	22	29.5	27.25	1 3/8	20	1 1/4	6.75	6	24	22	5.82
ASME 16.5	150	24	32	29.5	1 3/8	20	1 1/4	6.75	6	26.12	24	5.94
ASME 16.5	300	1/2	3.75	2.62	5/8	4	1/2	2.5	2.25	1.5	0.84	2
ASME 16.5	300	3/4	4.62	3.25	3/4	4	5/8	3	2.5	1.88	1.05	2.19
ASME 16.5	300	1	4.88	3.5	3/4	4	5/8	3	2.5	2.12	1.32	2.38
ASME 16.5	300	1 1/4	5.25	3.88	3/4	4	5/8	3.25	2.75	2.5	1.66	2.5
ASME 16.5	300	1 1/2	6.12	4.5	7/8	4	3/4	3.5	3	2.75	1.9	2.63
ASME 16.5	300	2	6.5	5	3/4	8	5/8	3.5	3	3.31	2.38	2.69
ASME 16.5	300	2 1/2	7.5	5.88	7/8	8	3/4	4	3.25	3.94	2.88	2.94
ASME 16.5	300	3	8.25	6.62	7/8	8	3/4	4.25	3.5	4.62	3.5	3.06
ASME 16.5	300	3 1/2	9	7.25	7/8	8	3/4	4.25	3.75	5.25	4	3.13
ASME 16.5	300	4	10	7.88	7/8	8	3/4	4.5	3.75	5.75	4.5	3.32
ASME 16.5	300	5	11	9.25	7/8	8	3/4	4.75	4.25	7	5.56	3.82
ASME 16.5	300	6	12.5	10.62	7/8	12	3/4	4.75	4.25	8.12	6.63	3.82
ASME 16.5	300	8	15	13	1	12	7/8	5.5	4.75	10.25	8.63	4.32
ASME 16.5	300	10	17.5	15.25	1 1/8	16	1	6.25	5.5	12.62	10.75	4.56
ASME 16.5	300	12	20.5	17.75	1 1/4	16	1 1/8	6.75	5.75	14.75	12.75	5.06
ASME 16.5	300	14	23	20.25	1 1/4	20	1 1/8	7	6.25	16.75	14	5.56
ASME 16.5	300	16	25.5	22.5	1 3/8	20	1 1/4	7.5	6.5	19	16	5.69
ASME 16.5	300	18	28	24.75	1 3/8	24	1 1/4	7.75	6.75	21	18	6.19
ASME 16.5	300	20	30.5	27	1 3/8	24	1 1/4	8	7.25	23.12	20	6.32
ASME 16.5	300	22	33	29.25	1 5/8	24	1 1/2	9	8	25.25	22	6.44
ASME 16.5	300	24	36	32	1 5/8	24	1 1/2	9	8	27.62	24	6.56

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Diameter Beginning Chamfer Welding Neck (A)	Length Through Bore- Welding Neck (Y3)
ASME 16.5	150	1/2	89	60.5	15 7/8	4	12 2/3	55	50	30	21.3	46
ASME 16.5	150	3/4	99	69.8	15 7/8	4	12 2/3	65	50	38	26.7	51
ASME 16.5	150	1	108	79.2	15 7/8	4	12 2/3	65	55	49	33.5	54
ASME 16.5	150	1 1/4	117	88.9	15 7/8	4	12 2/3	70	55	59	42.2	56
ASME 16.5	150	1 1/2	127	98.6	15 7/8	4	12 2/3	70	65	65	48.3	60
ASME 16.5	150	2	152	120.6	19	4	15 7/8	85	70	78	60.5	62
ASME 16.5	150	2 1/2	178	139.7	19	4	15 7/8	90	75	90	73.2	68
ASME 16.5	150	3	190	152.4	19	4	15 7/8	90	75	108	88.9	68
ASME 16.5	150	3 1/2	216	177.8	19	8	15 7/8	90	75	122	101.6	70
ASME 16.5	150	4	229	190.5	19	8	15 7/8	90	75	135	114.3	75
ASME 16.5	150	5	254	215.9	22 2/9	8	19	95	85	164	141.2	87
ASME 16.5	150	6	279	241.3	22 2/9	8	19	100	85	192	168.4	87
ASME 16.5	150	8	343	298.4	22 2/9	8	19	110	90	246	219.2	100
ASME 16.5	150	10	406	362	25 2/5	12	22 2/9	115	100	305	273	100
ASME 16.5	150	12	483	431.8	25 2/5	12	22 2/9	120	100	365	323.8	113
ASME 16.5	150	14	533	476.2	28 4/7	12	25 2/5	135	115	400	355.6	125
ASME 16.5	150	16	597	539.8	28 4/7	16	25 2/5	135	115	457	406.4	125
ASME 16.5	150	18	635	577.8	31 3/4	16	28 4/7	145	125	505	457.2	138
ASME 16.5	150	20	693	635	31 3/4	20	28 4/7	160	140	559	508	143
ASME 16.5	150	22	749	692.2	35	20	31 3/4	170	150	610	558.8	148
ASME 16.5	150	24	813	749.3	35	20	31 3/4	170	150	663	609.6	151
ASME 16.5	300	1/2	95	66.5	15 7/8	4	12 2/3	65	55	38	21.3	51
ASME 16.5	300	3/4	117	82.6	19	4	15 7/8	75	65	48	26.7	56
ASME 16.5	300	1	124	88.9	19	4	15 7/8	75	65	54	33.5	60
ASME 16.5	300	1 1/4	133	98.6	19	4	15 7/8	85	70	64	42.2	64
ASME 16.5	300	1 1/2	155	114.3	22 2/9	4	19	90	75	70	48.3	67
ASME 16.5	300	2	165	127	19	8	15 7/8	90	75	84	60.5	68
ASME 16.5	300	2 1/2	190	149.4	22 2/9	8	19	100	85	100	73.2	75
ASME 16.5	300	3	210	168.1	22 2/9	8	19	110	90	117	88.9	78
ASME 16.5	300	3 1/2	229	184.2	22 2/9	8	19	110	95	133	101.6	80
ASME 16.5	300	4	254	200.2	22 2/9	8	19	115	95	146	114.3	84
ASME 16.5	300	5	279	235	22 2/9	8	19	120	110	178	141.2	97
ASME 16.5	300	6	318	269.7	22 2/9	12	19	120	110	206	168.4	97
ASME 16.5	300	8	381	330.2	25 2/5	12	22 2/9	140	120	260	219.2	110
ASME 16.5	300	10	444	387.4	28 4/7	16	25 2/5	160	140	321	273	116
ASME 16.5	300	12	521	450.8	31 3/4	16	28 4/7	170	145	375	323.8	129
ASME 16.5	300	14	584	514.4	31 3/4	20	28 4/7	180	160	425	355.6	141
ASME 16.5	300	16	648	571.5	35	20	31 3/4	190	165	483	406.4	145
ASME 16.5	300	18	711	628.6	35	24	31 3/4	195	170	533	457.2	157
ASME 16.5	300	20	775	685.8	35	24	31 3/4	205	185	587	508	161
ASME 16.5	300	22	838	743	41 2/7	24	38	230	205	641	558.8	164
ASME 16.5	300	24	914	812.8	41 2/7	24	38	230	205	702	609.6	167

Tbl. 4.F.6

Lapped Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thickness Lap Joint (tf)	Bore- Min Lapped (B2)	Length Through Hub- Lapped (Y2)
ASME 16.5	150	1/2	3.5	2.38	5/8	4	1/2	2.25	2	1.19	0.44	0.9	0.62
ASME 16.5	150	3/4	3.88	2.75	5/8	4	1/2	2.5	2	1.5	0.5	1.11	0.62
ASME 16.5	150	1	4.25	3.12	5/8	4	1/2	2.5	2.25	1.94	0.56	1.38	0.69
ASME 16.5	150	1 1/4	4.62	3.5	5/8	4	1/2	2.75	2.25	2.31	0.62	1.72	0.81
ASME 16.5	150	1 1/2	5	3.88	5/8	4	1/2	2.75	2.5	2.56	0.69	1.97	0.88
ASME 16.5	150	2	6	4.75	3/4	4	5/8	3.25	2.75	3.06	0.75	2.46	1
ASME 16.5	150	2 1/2	7	5.5	3/4	4	5/8	3.5	3	3.56	0.88	2.97	1.12
ASME 16.5	150	3	7.5	6	3/4	4	5/8	3.5	3	4.25	0.94	3.6	1.19
ASME 16.5	150	3 1/2	8.5	7	3/4	8	5/8	3.5	3	4.81	0.94	4.1	1.25
ASME 16.5	150	4	9	7.5	3/4	8	5/8	3.5	3	5.31	0.94	4.6	1.31
ASME 16.5	150	5	10	8.5	7/8	8	3/4	3.75	3.25	6.44	0.94	5.69	1.44
ASME 16.5	150	6	11	9.5	7/8	8	3/4	4	3.25	7.56	1	6.75	1.56
ASME 16.5	150	8	13.5	11.75	7/8	8	3/4	4.25	3.5	9.69	1.12	8.75	1.75
ASME 16.5	150	10	16	14.25	1	12	7/8	4.5	4	12	1.19	10.92	1.94
ASME 16.5	150	12	19	17	1	12	7/8	4.75	4	14.38	1.25	12.92	2.19
ASME 16.5	150	14	21	18.75	1 1/8	12	1	5.25	4.5	15.75	1.38	14.18	3.12
ASME 16.5	150	16	23.5	21.25	1 1/8	16	1	5.25	4.5	18	1.44	16.19	3.44
ASME 16.5	150	18	25	22.75	1 1/4	16	1 1/8	5.75	5	19.88	1.56	18.2	3.81
ASME 16.5	150	20	27.5	25	1 1/4	20	1 1/8	6.25	5.5	22	1.69	20.25	4.06
ASME 16.5	150	22	29.5	27.25	1 3/8	20	1 1/4	6.75	6	24	1.81	22.25	4.25
ASME 16.5	150	24	32	29.5	1 3/8	20	1 1/4	6.75	6	26.12	1.88	24.25	4.38
ASME 16.5	300	1/2	3.75	2.62	5/8	4	1/2	2.5	2.25	1.5	0.56	0.9	0.88
ASME 16.5	300	3/4	4.62	3.25	3/4	4	5/8	3	2.5	1.88	0.62	1.11	1
ASME 16.5	300	1	4.88	3.5	3/4	4	5/8	3	2.5	2.12	0.69	1.38	1.06
ASME 16.5	300	1 1/4	5.25	3.88	3/4	4	5/8	3.25	2.75	2.5	0.75	1.72	1.06
ASME 16.5	300	1 1/2	6.12	4.5	7/8	4	3/4	3.5	3	2.75	0.81	1.97	1.16
ASME 16.5	300	2	6.5	5	3/4	8	5/8	3.5	3	3.31	0.88	2.46	1.31
ASME 16.5	300	2 1/2	7.5	5.88	7/8	8	3/4	4	3.25	3.94	1	2.97	1.5
ASME 16.5	300	3	8.25	6.62	7/8	8	3/4	4.25	3.5	4.62	1.12	3.6	1.69
ASME 16.5	300	3 1/2	9	7.25	7/8	8	3/4	4.25	3.75	5.25	1.19	4.1	1.75
ASME 16.5	300	4	10	7.88	7/8	8	3/4	4.5	3.75	5.75	1.25	4.6	1.88
ASME 16.5	300	5	11	9.25	7/8	8	3/4	4.75	4.25	7	1.38	5.69	2
ASME 16.5	300	6	12.5	10.62	7/8	12	3/4	4.75	4.25	8.12	1.44	6.75	2.06
ASME 16.5	300	8	15	13	1	12	7/8	5.5	4.75	10.25	1.62	8.75	2.44
ASME 16.5	300	10	17.5	15.25	1 1/8	16	1	6.25	5.5	12.62	1.88	10.92	3.75
ASME 16.5	300	12	20.5	17.75	1 1/4	16	1 1/8	6.75	5.75	14.75	2	12.92	4
ASME 16.5	300	14	23	20.25	1 1/4	20	1 1/8	7	6.25	16.75	2.12	14.18	4.38
ASME 16.5	300	16	25.5	22.5	1 3/8	20	1 1/4	7.5	6.5	19	2.25	16.19	4.75
ASME 16.5	300	18	28	24.75	1 3/8	24	1 1/4	7.75	6.75	21	2.38	18.2	5.12
ASME 16.5	300	20	30.5	27	1 3/8	24	1 1/4	8	7.25	23.12	2.5	20.25	5.5
ASME 16.5	300	22	33	29.25	1 5/8	24	1 1/2	9	8	25.25	2.62	22.25	5.69
ASME 16.5	300	24	36	32	1 5/8	24	1 1/2	9	8	27.62	2.75	24.25	6

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thickness Lap Joint (tf)	Bore- Min Lapped (B2)	Length Through Hub- Lapped (Y2)
ASME 16.5	150	1/2	89	60.5	15 7/8	4	12 2/3	55	50	30	11.2	22.9	16
ASME 16.5	150	3/4	99	69.8	15 7/8	4	12 2/3	65	50	38	12.7	28.2	16
ASME 16.5	150	1	108	79.2	15 7/8	4	12 2/3	65	55	49	14.2	35.1	18
ASME 16.5	150	1 1/4	117	88.9	15 7/8	4	12 2/3	70	55	59	15.7	43.7	21
ASME 16.5	150	1 1/2	127	98.6	15 7/8	4	12 2/3	70	65	65	17.5	50	22
ASME 16.5	150	2	152	120.6	19	4	15 7/8	85	70	78	19	62.5	25
ASME 16.5	150	2 1/2	178	139.7	19	4	15 7/8	90	75	90	22.4	75.4	28
ASME 16.5	150	3	190	152.4	19	4	15 7/8	90	75	108	23.9	91.4	30
ASME 16.5	150	3 1/2	216	177.8	19	8	15 7/8	90	75	122	23.9	104.1	32
ASME 16.5	150	4	229	190.5	19	8	15 7/8	90	75	135	23.9	116.8	33
ASME 16.5	150	5	254	215.9	22 2/9	8	19	95	85	164	23.9	144.5	37
ASME 16.5	150	6	279	241.3	22 2/9	8	19	100	85	192	25.4	171.4	40
ASME 16.5	150	8	343	298.4	22 2/9	8	19	110	90	246	28.4	222.2	44
ASME 16.5	150	10	406	362	25 2/5	12	22 2/9	115	100	305	30.2	277.4	49
ASME 16.5	150	12	483	431.8	25 2/5	12	22 2/9	120	100	365	31.8	328.2	56
ASME 16.5	150	14	533	476.2	28 4/7	12	25 2/5	135	115	400	35.1	360.2	79
ASME 16.5	150	16	597	539.8	28 4/7	16	25 2/5	135	115	457	36.6	411.2	87
ASME 16.5	150	18	635	577.8	31 3/4	16	28 4/7	145	125	505	39.6	462.3	97
ASME 16.5	150	20	693	635	31 3/4	20	28 4/7	160	140	559	42.9	514.4	103
ASME 16.5	150	22	749	692.2	35	20	31 3/4	170	150	610	46	565.2	108
ASME 16.5	150	24	813	749.3	35	20	31 3/4	170	150	663	47.8	616	111
ASME 16.5	300	1/2	95	66.5	15 7/8	4	12 2/3	65	55	38	14.2	22.9	22
ASME 16.5	300	3/4	117	82.6	19	4	15 7/8	75	65	48	15.7	28.2	25
ASME 16.5	300	1	124	88.9	19	4	15 7/8	75	65	54	17.5	35.1	27
ASME 16.5	300	1 1/4	133	98.6	19	4	15 7/8	85	70	64	19	43.7	27
ASME 16.5	300	1 1/2	155	114.3	22 2/9	4	19	90	75	70	20.6	50	30
ASME 16.5	300	2	165	127	19	8	15 7/8	90	75	84	22.4	62.5	33
ASME 16.5	300	2 1/2	190	149.4	22 2/9	8	19	100	85	100	25.4	75.4	38
ASME 16.5	300	3	210	168.1	22 2/9	8	19	110	90	117	28.4	91.4	43
ASME 16.5	300	3 1/2	229	184.2	22 2/9	8	19	110	95	133	30.2	104.1	44
ASME 16.5	300	4	254	200.2	22 2/9	8	19	115	95	146	31.8	116.8	48
ASME 16.5	300	5	279	235	22 2/9	8	19	120	110	178	35.1	144.5	51
ASME 16.5	300	6	318	269.7	22 2/9	12	19	120	110	206	36.6	171.4	52
ASME 16.5	300	8	381	330.2	25 2/5	12	22 2/9	140	120	260	41.1	222.2	62
ASME 16.5	300	10	444	387.4	28 4/7	16	25 2/5	160	140	321	47.8	277.4	95
ASME 16.5	300	12	521	450.8	31 3/4	16	28 4/7	170	145	375	50.8	328.2	102
ASME 16.5	300	14	584	514.4	31 3/4	20	28 4/7	180	160	425	53.8	360.2	111
ASME 16.5	300	16	648	571.5	35	20	31 3/4	190	165	483	57.2	411.2	121
ASME 16.5	300	18	711	628.6	35	24	31 3/4	195	170	533	60.5	462.3	130
ASME 16.5	300	20	775	685.8	35	24	31 3/4	205	185	587	63.5	514.4	140
ASME 16.5	300	22	838	743	41 2/7	24	38	230	205	641	66.5	565.2	145
ASME 16.5	300	24	914	812.8	41 2/7	24	38	230	205	702	68.8	616	152

Tbl. 4.F.7

Notes:

Refer to ANSI/ASME B16.5 for notes, pressures, and minimum design requirements.
Any column with "-" relate to a note in the standard or is not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are millimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Threaded Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thickness Flange (tf)	Min Thread Length Threaded (T)	Min Counterbore Threaded Flange (Q)
ASME 16.5	400	1/2	3.75	2.62	0.63	4	0.5	-	-	1.5	0.56	0.62	-
ASME 16.5	400	3/4	4.62	3.25	0.75	4	0.63	-	-	1.88	0.62	0.62	-
ASME 16.5	400	1	4.88	3.5	0.75	4	0.63	-	-	2.12	0.69	0.69	-
ASME 16.5	400	1 1/4	5.25	3.88	0.75	4	0.63	-	-	2.5	0.81	0.81	-
ASME 16.5	400	1 1/2	6.12	4.5	0.88	4	0.75	-	-	2.75	0.88	0.88	-
ASME 16.5	400	2	6.5	5	0.75	8	0.63	-	-	3.31	1	1.12	-
ASME 16.5	400	2 1/2	7.5	5.88	0.88	8	0.75	-	-	3.94	1.12	1.25	-
ASME 16.5	400	3	8.25	6.62	0.88	8	0.75	-	-	4.62	1.25	1.38	-
ASME 16.5	400	3 1/2	9	7.25	1	8	0.88	-	-	5.25	1.38	1.56	-
ASME 16.5	400	4	10	7.88	1	8	0.88	5.5	5.25	5.75	1.38	1.44	4.63
ASME 16.5	400	5	11	9.25	1	8	0.88	5.75	5.25	7	1.5	1.69	5.69
ASME 16.5	400	6	12.5	10.62	1	12	0.88	6	5.75	8.12	1.62	1.81	6.75
ASME 16.5	400	8	15	13	1.13	12	1	6.75	6.5	10.25	1.88	2	8.75
ASME 16.5	400	10	17.5	15.25	1.25	16	1.13	7.5	7.25	12.62	2.12	2.19	10.88
ASME 16.5	400	12	20.5	17.75	1.38	16	1.25	8	7.75	14.75	2.25	2.38	12.94
ASME 16.5	400	14	23	20.25	1.38	20	1.25	8.25	8	16.75	2.38	2.5	14.19
ASME 16.5	400	16	25.5	23	1.5	20	1.38	8.75	8.5	19	2.5	2.69	16.19
ASME 16.5	400	18	28	24.75	1.5	24	1.38	9	8.75	21	2.62	2.75	18.19
ASME 16.5	400	20	30.5	27	1.63	24	1.5	9.5	9.25	23.12	2.75	2.88	20.19
ASME 16.5	400	22	33	29.25	1.75	24	1.63	10	9.75	25.25	2.88	…	…
ASME 16.5	400	24	36	32	1.88	24	1.75	10.5	10.25	27.62	3	3.25	24.19
ASME 16.5	600	1/2	3.75	2.62	0.63	4	0.5	3	2.75	1.5	0.56	0.62	0.93
ASME 16.5	600	3/4	4.62	3.25	0.75	4	0.63	3.5	3.25	1.88	0.62	0.62	1.14
ASME 16.5	600	1	4.88	3.5	0.75	4	0.63	3.5	3.25	2.12	0.69	0.69	1.41
ASME 16.5	600	1 1/4	5.25	3.88	0.75	4	0.63	3.75	3.5	2.5	0.81	0.81	1.75
ASME 16.5	600	1 1/2	6.12	4.5	0.88	4	0.75	4.25	4	2.75	0.88	0.88	1.99
ASME 16.5	600	2	6.5	5	0.75	8	0.63	4.25	4	3.31	1	1.12	0.25
ASME 16.5	600	2 1/2	7.5	5.88	0.88	8	0.75	4.75	4.5	3.94	1.12	1.25	3
ASME 16.5	600	3	8.25	6.62	0.88	8	0.75	5	4.75	4.62	1.25	1.38	3.63
ASME 16.5	600	3 1/2	9	7.25	1	8	0.88	5.5	5.25	5.25	1.38	1.56	4.13
ASME 16.5	600	4	10.75	8.5	1	8	0.88	5.75	5.5	6	1.5	1.62	4.63
ASME 16.5	600	5	13	10.5	1.13	8	1	6.5	6.25	7.44	1.75	1.88	5.69
ASME 16.5	600	6	14	11.5	1.13	12	1	6.75	6.5	8.75	1.88	2	6.75
ASME 16.5	600	8	16.5	13.75	1.25	12	1.13	7.5	7.25	10.75	2.19	2.25	8.75
ASME 16.5	600	10	20	17	1.38	16	1.25	8.5	8.25	13.5	2.5	2.56	10.88
ASME 16.5	600	12	22	19.25	1.38	20	1.25	8.75	8.5	15.75	2.62	2.75	12.94
ASME 16.5	600	14	23.75	20.75	1.5	20	1.38	9.25	9	17	2.75	2.88	14.19
ASME 16.5	600	16	27	23.75	1.63	20	1.5	10	9.75	19.5	3	3.06	16.19
ASME 16.5	600	18	29.25	25.75	1.75	20	1.63	10.75	10.5	21.5	3.25	3.12	18.19
ASME 16.5	600	20	32	28.5	1.75	24	1.63	11.25	11	24	3.5	3.25	20.19
ASME 16.5	600	22	34.25	30.62	1.88	24	1.75	12	…	26.25	3.75	…	…
ASME 16.5	600	24	37	33	2	24	1.88	13	12.75	28.25	4	3.62	24.19
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	9.5	7.5	1	8	0.88	5.75	5.75	5	1.5	1.62	3.63
ASME 16.5	900	4	11.5	9.25	1.25	8	1.13	6.75	6.75	6.25	1.75	1.88	4.63
ASME 16.5	900	5	13.75	11	1.38	8	1.25	7.5	7.5	7.5	2	2.12	5.69
ASME 16.5	900	6	15	12.5	1.25	12	1.13	7.5	7.75	9.25	2.19	2.25	6.75
ASME 16.5	900	8	18.5	15.5	1.5	12	1.38	8.75	8.75	11.75	2.5	2.5	8.75
ASME 16.5	900	10	21.5	18.5	1.5	16	1.38	9.25	9.25	14.5	2.75	2.81	10.88
ASME 16.5	900	12	24	21	1.5	20	1.38	10	10	16.5	3.12	3	12.94
ASME 16.5	900	14	25.25	22	1.63	20	1.5	10.75	11	17.75	3.38	3.25	14.19
ASME 16.5	900	16	27.75	24.25	1.75	20	1.63	11.25	11.5	20	3.5	3.38	16.19
ASME 16.5	900	18	31	27	2	20	1.88	12.75	13.25	22.25	4	3.5	18.19
ASME 16.5	900	20	33.75	29.5	2.13	20	2	13.75	14.25	24.5	4.25	3.62	20.19
ASME 16.5	900	24	41	35.5	2.63	20	2.5	17.25	18	29.5	5.5	4	24.19
ASME 16.5	1500	1/2	4.75	3.25	0.88	4	0.75	4.25	4	1.5	0.88	0.88	0.93
ASME 16.5	1500	3/4	5.12	3.5	0.88	4	0.75	4.5	4.25	1.75	1	1	1.14
ASME 16.5	1500	1	5.88	4	1	4	0.88	5	4.75	2.06	1.12	1.12	1.41
ASME 16.5	1500	1 1/4	6.25	4.38	1	4	0.88	5	4.75	2.5	1.12	1.19	1.75
ASME 16.5	1500	1 1/2	7	4.88	1.13	4	1	5.5	5.25	2.75	1.25	1.25	1.99
ASME 16.5	1500	2	8.5	6.5	1	8	0.88	5.75	5.5	4.12	1.5	1.5	2.5
ASME 16.5	1500	2 1/2	9.62	7.5	1.13	8	1	6.25	6	4.88	1.62	1.88	3
ASME 16.5	1500	3	10.5	8	1.13	8	1.13	7	6.75	5.25	1.88	…	…
ASME 16.5	1500	4	12.25	9.5	1.38	8	1.25	7.75	7.5	6.38	2.12	…	…
ASME 16.5	1500	5	14.75	11.5	1.63	8	1.5	9.75	9.5	7.75	2.88	…	…
ASME 16.5	1500	6	15.5	12.5	1.5	12	1.38	10.25	10	9	3.25	…	…
ASME 16.5	1500	8	19	15.5	1.75	12	1.63	11.5	11.25	11.5	3.62	…	…
ASME 16.5	1500	10	23	19	2	12	1.88	13.25	13	14.5	4.25	…	…
ASME 16.5	1500	12	26.5	22.5	2.13	16	2	14.75	14.5	17.75	4.88	…	…
ASME 16.5	1500	14	29.5	25	2.38	16	2.25	16	15.75	19.5	5.25	…	…
ASME 16.5	1500	16	32.5	27.75	2.63	16	2.5	17.5	17.25	21.75	5.75	…	…
ASME 16.5	1500	18	36	30.5	2.88	16	2.75	19.5	19.25	23.5	6.38	…	…
ASME 16.5	1500	20	38.75	32.75	3.13	16	3	21.25	21	25.25	7	…	…
ASME 16.5	1500	24	46	39	3.63	16	3	24.25	24	30	8	…	…
ASME 16.5	2500	1/2	5.25	3.5	0.88	4	0.75	4.75	4.5	1.69	1.19	1.12	0.93
ASME 16.5	2500	3/4	5.5	3.75	0.88	4	0.75	5	4.75	2	1.25	1.25	1.14
ASME 16.5	2500	1	6.25	4.25	1	4	0.88	5.5	5.25	2.25	1.38	1.38	1.41
ASME 16.5	2500	1 1/4	7.25	5.12	1.13	4	1	6	5.75	2.88	1.5	1.5	1.75
ASME 16.5	2500	1 1/2	8	5.75	1.25	4	1.13	6.75	6.5	3.12	1.75	1.75	1.99
ASME 16.5	2500	2	9.25	6.75	1.13	8	1	7	6.75	3.75	2	2	2.5
ASME 16.5	2500	2 1/2	10.5	7.75	1.25	8	1.13	7.75	7.5	4.5	2.25	2.25	3
ASME 16.5	2500	3	12	9	1.38	8	1.25	8.75	8.5	5.25	2.62	…	…
ASME 16.5	2500	4	14	10.75	1.63	8	1.5	10	9.75	6.5	3	…	…
ASME 16.5	2500	5	16.5	12.75	1.88	8	1.75	11.75	11.5	8	3.62	…	…
ASME 16.5	2500	6	19	14.5	2.13	8	2	13.5	13.25	9.25	4.25	…	…
ASME 16.5	2500	8	21.75	17.25	2.13	12	2	15	14.75	12	5	…	…
ASME 16.5	2500	10	26.5	21.25	2.63	12	2.5	19.25	19	14.75	6.5	…	…
ASME 16.5	2500	12	30	24.38	2.88	12	2.75	21.25	21	17.38	7.25	…	…

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thickness Flange (tf)	Min Thread Length Threaded (T)	Min Counterbore Threaded Flange (Q)
ASME 16.5	400	1/2	95	66.5	15.88	4	12.7	-	-	38.1	14.224	-	-
ASME 16.5	400	3/4	117	82.6	19.05	4	15.88	-	-	47.752	15.748	-	-
ASME 16.5	400	1	124	88.9	19.05	4	15.88	-	-	53.848	17.526	-	-
ASME 16.5	400	1 1/4	133	98.6	19.05	4	15.88	-	-	63.5	20.574	-	-
ASME 16.5	400	1 1/2	155	114.3	22.23	4	19.05	-	-	69.85	22.352	-	-
ASME 16.5	400	2	165	127	19.05	8	15.88	-	-	84.074	25.4	-	-
ASME 16.5	400	2 1/2	190	149.4	22.23	8	19.05	-	-	100.076	28.448	-	-
ASME 16.5	400	3	210	168.1	22.23	8	19.05	-	-	117.348	31.75	-	-
ASME 16.5	400	3 1/2	229	184.2	25.4	8	22.23	-	-	133.35	35.052	-	-
ASME 16.5	400	4	254	200.2	25.4	8	22.23	140	135	146.05	35.052	37	117.6
ASME 16.5	400	5	279	235	25.4	8	22.23	145	135	177.8	38.1	43	144.5
ASME 16.5	400	6	318	269.7	25.4	12	22.23	150	145	206.248	41.15	46	171.4
ASME 16.5	400	8	381	330.2	28.58	12	25.4	170	165	260.35	47.75	51	222.2
ASME 16.5	400	10	444	387.4	31.75	16	28.58	190	185	320.548	53.85	56	276.4
ASME 16.5	400	12	521	450.8	34.93	16	31.75	205	195	374.65	57.15	60	328.7
ASME 16.5	400	14	584	514.4	34.93	20	31.75	210	205	425.45	60.45	64	360.4
ASME 16.5	400	16	648	571.5	38.1	20	34.93	220	215	482.6	63.5	68	411.2
ASME 16.5	400	18	711	628.6	38.1	24	34.93	230	220	533.4	66.55	70	462
ASME 16.5	400	20	775	685.8	41.28	24	38.1	240	235	587.248	69.85	73	512.8
ASME 16.5	400	22	838	743	44.45	24	41.28	255	250	641.35	73.15	…	…
ASME 16.5	400	24	914	812.8	47.63	24	44.45	265	260	701.548	76.2	83	614.4
ASME 16.5	600	1/2	95	66.5	15.88	4	12.7	75	70	38.1	14.22	16	23.6
ASME 16.5	600	3/4	117	82.6	19.05	4	15.88	90	85	47.752	15.75	16	29
ASME 16.5	600	1	124	88.9	19.05	4	15.88	90	85	53.848	17.53	18	35.8
ASME 16.5	600	1 1/4	133	98.6	19.05	4	15.88	95	90	63.5	20.57	21	44.4
ASME 16.5	600	1 1/2	155	114.3	22.23	4	19.05	110	100	69.85	22.35	22	50.5
ASME 16.5	600	2	165	127	19.05	8	15.88	110	100	84.074	25.4	28	63.5
ASME 16.5	600	2 1/2	190	149.4	22.23	8	19.05	120	115	100.076	28.45	32	76.2
ASME 16.5	600	3	210	168.1	22.23	8	19.05	125	120	117.348	31.75	35	92.2
ASME 16.5	600	3 1/2	229	184.2	25.4	8	22.23	140	135	133.35	35.05	40	104.9
ASME 16.5	600	4	273	215.9	25.4	8	22.23	145	140	152.4	38.1	41	117.6
ASME 16.5	600	5	330	266.7	28.58	8	25.4	165	160	188.976	44.45	48	144.5
ASME 16.5	600	6	356	292.1	28.58	12	25.4	170	165	222.25	47.75	51	171.4
ASME 16.5	600	8	419	349.2	31.75	12	28.58	190	185	273.05	55.63	57	222.2
ASME 16.5	600	10	508	431.8	34.93	16	31.75	215	210	342.9	63.5	65	276.4
ASME 16.5	600	12	559	489	34.93	20	31.75	220	215	400.05	66.55	70	328.7
ASME 16.5	600	14	603	527	38.1	20	34.93	235	230	431.8	69.85	73	360.4
ASME 16.5	600	16	686	603.2	41.28	20	38.1	255	250	495.3	76.2	78	411.2
ASME 16.5	600	18	743	654	44.45	20	41.28	275	265	546.1	82.55	79	462
ASME 16.5	600	20	813	723.9	44.45	24	41.28	285	280	609.6	88.9	83	512.8
ASME 16.5	600	22	870	777.7	47.63	24	44.45	305	…	666.75	95.25	…	…
ASME 16.5	600	24	940	838.2	50.8	24	47.63	330	325	717.55	101.6	92	614.4
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	241	190.5	25.4	8	22.23	145	145	127	38.1	41	92.2
ASME 16.5	900	4	292	235	31.75	8	28.58	170	170	158.75	44.45	48	117.6
ASME 16.5	900	5	349	279.4	34.93	8	31.75	190	190	190.5	50.8	54	144.5
ASME 16.5	900	6	381	317.5	31.75	12	28.58	190	195	234.95	55.63	57	171.4
ASME 16.5	900	8	470	393.7	38.1	12	34.93	220	220	298.45	63.5	64	222.2
ASME 16.5	900	10	546	469.9	38.1	16	34.93	235	235	368.3	69.85	71	276.4
ASME 16.5	900	12	610	533.4	38.1	20	34.93	255	255	419.1	79.25	76	328.7
ASME 16.5	900	14	641	558.8	41.28	20	38.1	275	280	450.85	85.85	83	360.4
ASME 16.5	900	16	705	616	44.45	20	41.28	285	290	508	88.9	86	411.2
ASME 16.5	900	18	787	685.8	50.8	20	47.63	325	335	565.15	101.6	89	462
ASME 16.5	900	20	857	749.3	53.98	20	50.8	350	360	622.3	107.95	92	512.8
ASME 16.5	900	24	1041	901.7	66.68	20	63.5	440	455	749.3	139.7	102	614.4
ASME 16.5	1500	1/2	121	82.6	22.23	4	19.05	110	100	38.1	22.35	22	23.6
ASME 16.5	1500	3/4	130	88.9	22.23	4	19.05	115	110	44.45	25.4	25	29
ASME 16.5	1500	1	149	101.6	25.4	4	22.23	125	120	52.324	28.45	28	35.8
ASME 16.5	1500	1 1/4	159	111.1	25.4	4	22.23	125	120	63.5	28.45	30	44.4
ASME 16.5	1500	1 1/2	178	124	28.58	4	25.4	140	135	69.85	31.75	32	50.5
ASME 16.5	1500	2	216	165.1	25.4	8	22.23	145	140	104.648	38.1	38	63.5
ASME 16.5	1500	2 1/2	244	190.5	28.58	8	25.4	160	150	123.952	41.15	48	76.2
ASME 16.5	1500	3	267	203.2	28.58	8	28.58	180	170	133.35	47.75	…	…
ASME 16.5	1500	4	311	241.3	34.93	8	31.75	195	190	162.052	53.85	…	…
ASME 16.5	1500	5	375	292.1	41.28	8	38.1	250	240	196.85	73.15	…	…
ASME 16.5	1500	6	394	317.5	38.1	12	34.93	260	255	228.6	82.55	…	…
ASME 16.5	1500	8	483	393.7	44.45	12	41.28	290	285	292.1	91.95	…	…
ASME 16.5	1500	10	584	482.6	50.8	12	47.63	335	330	368.3	107.95	…	…
ASME 16.5	1500	12	673	571.5	53.98	16	50.8	375	370	450.85	123.95	…	…
ASME 16.5	1500	14	749	635	60.33	16	57.15	405	400	495.3	133.35	…	…
ASME 16.5	1500	16	826	704.8	66.68	16	63.5	445	440	552.45	146.05	…	…
ASME 16.5	1500	18	914	774.7	73.03	16	69.85	495	490	596.9	162.05	…	…
ASME 16.5	1500	20	984	831.8	79.38	16	76.2	540	535	641.35	177.8	…	…
ASME 16.5	1500	24	1168	990.6	92.08	16	76.2	615	610	762	203.2	…	…
ASME 16.5	2500	1/2	133	88.9	22.23	4	19.05	120	115	42.926	30.23	28	23.6
ASME 16.5	2500	3/4	140	95.2	22.23	4	19.05	125	120	50.8	31.75	32	29
ASME 16.5	2500	1	159	108	25.4	4	22.23	140	135	57.15	35.05	35	35.8
ASME 16.5	2500	1 1/4	184	130	28.58	4	25.4	150	145	73.152	38.1	38	44.4
ASME 16.5	2500	1 1/2	203	146	31.75	4	28.58	170	165	79.248	44.45	44	50.5
ASME 16.5	2500	2	235	171.4	28.58	8	25.4	180	170	95.25	50.8	51	63.5
ASME 16.5	2500	2 1/2	267	196.8	31.75	8	28.58	195	190	114.3	57.15	57	76.2
ASME 16.5	2500	3	305	228.6	34.93	8	31.75	220	215	133.35	66.55	…	…
ASME 16.5	2500	4	356	273	41.28	8	38.1	255	250	165.1	76.2	…	…
ASME 16.5	2500	5	419	323.8	47.63	8	44.45	300	290	203.2	91.95	…	…
ASME 16.5	2500	6	483	368.3	53.98	8	50.8	345	335	234.95	107.95	…	…
ASME 16.5	2500	8	552	438.2	53.98	12	50.8	380	375	304.8	127	…	…
ASME 16.5	2500	10	673	539.8	66.68	12	63.5	490	485	374.65	165.1	…	…
ASME 16.5	2500	12	762	619.3	73.03	12	69.85	540	535	441.452	184.15	…	…

Tbl. 4.F.8

Slip-On Welding Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thickness Flange (tf)
ASME 16.5	400	1/2	3.75	2.62	0.63	4	0.5	-	-	1.5	0.56
ASME 16.5	400	3/4	4.62	3.25	0.75	4	0.63	-	-	1.88	0.62
ASME 16.5	400	1	4.88	3.5	0.75	4	0.63	-	-	2.12	0.69
ASME 16.5	400	1 1/4	5.25	3.88	0.75	4	0.63	-	-	2.5	0.81
ASME 16.5	400	1 1/2	6.12	4.5	0.88	4	0.75	-	-	2.75	0.88
ASME 16.5	400	2	6.5	5	0.75	8	0.63	-	-	3.31	1
ASME 16.5	400	2 1/2	7.5	5.88	0.88	8	0.75	-	-	3.94	1.12
ASME 16.5	400	3	8.25	6.62	0.88	8	0.75	-	-	4.62	1.25
ASME 16.5	400	3 1/2	9	7.25	1	8	0.88	-	-	5.25	1.38
ASME 16.5	400	4	10	7.88	1	8	0.88	5.5	5.25	5.75	1.38
ASME 16.5	400	5	11	9.25	1	8	0.88	5.75	5.25	7	1.5
ASME 16.5	400	6	12.5	10.62	1	12	0.88	6	5.75	8.12	1.62
ASME 16.5	400	8	15	13	1.13	12	1	6.75	6.5	10.25	1.88
ASME 16.5	400	10	17.5	15.25	1.25	16	1.13	7.5	7.25	12.62	2.12
ASME 16.5	400	12	20.5	17.75	1.38	16	1.25	8	7.75	14.75	2.25
ASME 16.5	400	14	23	20.25	1.38	20	1.25	8.25	8	16.75	2.38
ASME 16.5	400	16	25.5	23	1.5	20	1.38	8.75	8.5	19	2.5
ASME 16.5	400	18	28	24.75	1.5	24	1.38	9	8.75	21	2.62
ASME 16.5	400	20	30.5	27	1.63	24	1.5	9.5	9.25	23.12	2.75
ASME 16.5	400	22	33	29.25	1.75	24	1.63	10	9.75	25.25	2.88
ASME 16.5	400	24	36	32	1.88	24	1.75	10.5	10.25	27.62	3
ASME 16.5	600	1/2	3.75	2.62	0.63	4	0.5	3	2.75	1.5	0.56
ASME 16.5	600	3/4	4.62	3.25	0.75	4	0.63	3.5	3.25	1.88	0.62
ASME 16.5	600	1	4.88	3.5	0.75	4	0.63	3.5	3.25	2.12	0.69
ASME 16.5	600	1 1/4	5.25	3.88	0.75	4	0.63	3.75	3.5	2.5	0.81
ASME 16.5	600	1 1/2	6.12	4.5	0.88	4	0.75	4.25	4	2.75	0.88
ASME 16.5	600	2	6.5	5	0.75	8	0.63	4.25	4	3.31	1
ASME 16.5	600	2 1/2	7.5	5.88	0.88	8	0.75	4.75	4.5	3.94	1.12
ASME 16.5	600	3	8.25	6.62	0.88	8	0.75	5	4.75	4.62	1.25
ASME 16.5	600	3 1/2	9	7.25	1	8	0.88	5.5	5.25	5.25	1.38
ASME 16.5	600	4	10.75	8.5	1	8	0.88	5.75	5.5	6	1.5
ASME 16.5	600	5	13	10.5	1.13	8	1	6.5	6.25	7.44	1.75
ASME 16.5	600	6	14	11.5	1.13	12	1	6.75	6.5	8.75	1.88
ASME 16.5	600	8	16.5	13.75	1.25	12	1.13	7.5	7.25	10.75	2.19
ASME 16.5	600	10	20	17	1.38	16	1.25	8.5	8.25	13.5	2.5
ASME 16.5	600	12	22	19.25	1.38	20	1.25	8.75	8.5	15.75	2.62
ASME 16.5	600	14	23.75	20.75	1.5	20	1.38	9.25	9	17	2.75
ASME 16.5	600	16	27	23.75	1.63	20	1.5	10	9.75	19.5	3
ASME 16.5	600	18	29.25	25.75	1.75	20	1.63	10.75	10.5	21.5	3.25
ASME 16.5	600	20	32	28.5	1.75	24	1.63	11.25	11	24	3.5
ASME 16.5	600	22	34.25	30.62	1.88	24	1.75	12	…	26.25	3.75
ASME 16.5	600	24	37	33	2	24	1.88	13	12.75	28.25	4
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	9.5	7.5	1	8	0.88	5.75	5.75	5	1.5
ASME 16.5	900	4	11.5	9.25	1.25	8	1.13	6.75	6.75	6.25	1.75
ASME 16.5	900	5	13.75	11	1.38	8	1.25	7.5	7.5	7.5	2
ASME 16.5	900	6	15	12.5	1.25	12	1.13	7.5	7.75	9.25	2.19
ASME 16.5	900	8	18.5	15.5	1.5	12	1.38	8.75	8.75	11.75	2.5
ASME 16.5	900	10	21.5	18.5	1.5	16	1.38	9.25	9.25	14.5	2.75
ASME 16.5	900	12	24	21	1.5	20	1.38	10	10	16.5	3.12
ASME 16.5	900	14	25.25	22	1.63	20	1.5	10.75	11	17.75	3.38
ASME 16.5	900	16	27.75	24.25	1.75	20	1.63	11.25	11.5	20	3.5
ASME 16.5	900	18	31	27	2	20	1.88	12.75	13.25	22.25	4
ASME 16.5	900	20	33.75	29.5	2.13	20	2	13.75	14.25	24.5	4.25
ASME 16.5	900	24	41	35.5	2.63	20	2.5	17.25	18	29.5	5.5
ASME 16.5	1500	1/2	4.75	3.25	0.88	4	0.75	4.25	4	1.5	0.88
ASME 16.5	1500	3/4	5.12	3.5	0.88	4	0.75	4.5	4.25	1.75	1
ASME 16.5	1500	1	5.88	4	1	4	0.88	5	4.75	2.06	1.12
ASME 16.5	1500	1 1/4	6.25	4.38	1	4	0.88	5	4.75	2.5	1.12
ASME 16.5	1500	1 1/2	7	4.88	1.13	4	1	5.5	5.25	2.75	1.25
ASME 16.5	1500	2	8.5	6.5	1	8	0.88	5.75	5.5	4.12	1.5
ASME 16.5	1500	2 1/2	9.62	7.5	1.13	8	1	6.25	6	4.88	1.62
ASME 16.5	1500	3	10.5	8	1.13	8	1.13	7	6.75	5.25	1.88
ASME 16.5	1500	4	12.25	9.5	1.38	8	1.25	7.75	7.5	6.38	2.12
ASME 16.5	1500	5	14.75	11.5	1.63	8	1.5	9.75	9.5	7.75	2.88
ASME 16.5	1500	6	15.5	12.5	1.5	12	1.38	10.25	10	9	3.25
ASME 16.5	1500	8	19	15.5	1.75	12	1.63	11.5	11.25	11.5	3.62
ASME 16.5	1500	10	23	19	2	12	1.88	13.25	13	14.5	4.25
ASME 16.5	1500	12	26.5	22.5	2.13	16	2	14.75	14.5	17.75	4.88
ASME 16.5	1500	14	29.5	25	2.38	16	2.25	16	15.75	19.5	5.25
ASME 16.5	1500	16	32.5	27.75	2.63	16	2.5	17.5	17.25	21.75	5.75
ASME 16.5	1500	18	36	30.5	2.88	16	2.75	19.5	19.25	23.5	6.38
ASME 16.5	1500	20	38.75	32.75	3.13	16	3	21.25	21	25.25	7
ASME 16.5	1500	24	46	39	3.63	16	3	24.25	24	30	8
ASME 16.5	2500	1/2	5.25	3.5	0.88	4	0.75	4.75	4.5	1.69	1.19
ASME 16.5	2500	3/4	5.5	3.75	0.88	4	0.75	5	4.75	2	1.25
ASME 16.5	2500	1	6.25	4.25	1	4	0.88	5.5	5.25	2.25	1.38
ASME 16.5	2500	1 1/4	7.25	5.12	1.13	4	1	6	5.75	2.88	1.5
ASME 16.5	2500	1 1/2	8	5.75	1.25	4	1.13	6.75	6.5	3.12	1.75
ASME 16.5	2500	2	9.25	6.75	1.13	8	1	7	6.75	3.75	2
ASME 16.5	2500	2 1/2	10.5	7.75	1.25	8	1.13	7.75	7.5	4.5	2.25
ASME 16.5	2500	3	12	9	1.38	8	1.25	8.75	8.5	5.25	2.62
ASME 16.5	2500	4	14	10.75	1.63	8	1.5	10	9.75	6.5	3
ASME 16.5	2500	5	16.5	12.75	1.88	8	1.75	11.75	11.5	8	3.62
ASME 16.5	2500	6	19	14.5	2.13	8	2	13.5	13.25	9.25	4.25
ASME 16.5	2500	8	21.75	17.25	2.13	12	2	15	14.75	12	5
ASME 16.5	2500	10	26.5	21.25	2.63	12	2.5	19.25	19	14.75	6.5
ASME 16.5	2500	12	30	24.38	2.88	12	2.75	21.25	21	17.38	7.25

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thickness Flange (tf)
ASME 16.5	400	1/2	95	66.5	15.88	4	12.7	-	-	38.1	14.224
ASME 16.5	400	3/4	117	82.6	19.05	4	15.88	-	-	47.752	15.748
ASME 16.5	400	1	124	88.9	19.05	4	15.88	-	-	53.848	17.526
ASME 16.5	400	1 1/4	133	98.6	19.05	4	15.88	-	-	63.5	20.574
ASME 16.5	400	1 1/2	155	114.3	22.23	4	19.05	-	-	69.85	22.352
ASME 16.5	400	2	165	127	19.05	8	15.88	-	-	84.074	25.4
ASME 16.5	400	2 1/2	190	149.4	22.23	8	19.05	-	-	100.076	28.448
ASME 16.5	400	3	210	168.1	22.23	8	19.05	-	-	117.348	31.75
ASME 16.5	400	3 1/2	229	184.2	25.4	8	22.23	-	-	133.35	35.052
ASME 16.5	400	4	254	200.2	25.4	8	22.23	140	135	146.05	35.052
ASME 16.5	400	5	279	235	25.4	8	22.23	145	135	177.8	38.1
ASME 16.5	400	6	318	269.7	25.4	12	22.23	150	145	206.248	41.15
ASME 16.5	400	8	381	330.2	28.58	12	25.4	170	165	260.35	47.75
ASME 16.5	400	10	444	387.4	31.75	16	28.58	190	185	320.548	53.85
ASME 16.5	400	12	521	450.8	34.93	16	31.75	205	195	374.65	57.15
ASME 16.5	400	14	584	514.4	34.93	20	31.75	210	205	425.45	60.45
ASME 16.5	400	16	648	571.5	38.1	20	34.93	220	215	482.6	63.5
ASME 16.5	400	18	711	628.6	38.1	24	34.93	230	220	533.4	66.55
ASME 16.5	400	20	775	685.8	41.28	24	38.1	240	235	587.248	69.85
ASME 16.5	400	22	838	743	44.45	24	41.28	255	250	641.35	73.15
ASME 16.5	400	24	914	812.8	47.63	24	44.45	265	260	701.548	76.2
ASME 16.5	600	1/2	95	66.5	15.88	4	12.7	75	70	38.1	14.22
ASME 16.5	600	3/4	117	82.6	19.05	4	15.88	90	85	47.752	15.75
ASME 16.5	600	1	124	88.9	19.05	4	15.88	90	85	53.848	17.53
ASME 16.5	600	1 1/4	133	98.6	19.05	4	15.88	95	90	63.5	20.57
ASME 16.5	600	1 1/2	155	114.3	22.23	4	19.05	110	100	69.85	22.35
ASME 16.5	600	2	165	127	19.05	8	15.88	110	100	84.074	25.4
ASME 16.5	600	2 1/2	190	149.4	22.23	8	19.05	120	115	100.076	28.45
ASME 16.5	600	3	210	168.1	22.23	8	19.05	125	120	117.348	31.75
ASME 16.5	600	3 1/2	229	184.2	25.4	8	22.23	140	135	133.35	35.05
ASME 16.5	600	4	273	215.9	25.4	8	22.23	145	140	152.4	38.1
ASME 16.5	600	5	330	266.7	28.58	8	25.4	165	160	188.976	44.45
ASME 16.5	600	6	356	292.1	28.58	12	25.4	170	165	222.25	47.75
ASME 16.5	600	8	419	349.2	31.75	12	28.58	190	185	273.05	55.63
ASME 16.5	600	10	508	431.8	34.93	16	31.75	215	210	342.9	63.5
ASME 16.5	600	12	559	489	34.93	20	31.75	220	215	400.05	66.55
ASME 16.5	600	14	603	527	38.1	20	34.93	235	230	431.8	69.85
ASME 16.5	600	16	686	603.2	41.28	20	38.1	255	250	495.3	76.2
ASME 16.5	600	18	743	654	44.45	20	41.28	275	265	546.1	82.55
ASME 16.5	600	20	813	723.9	44.45	24	41.28	285	280	609.6	88.9
ASME 16.5	600	22	870	777.7	47.63	24	44.45	305	…	666.75	95.25
ASME 16.5	600	24	940	838.2	50.8	24	47.63	330	325	717.55	101.6
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	241	190.5	25.4	8	22.23	145	145	127	38.1
ASME 16.5	900	4	292	235	31.75	8	28.58	170	170	158.75	44.45
ASME 16.5	900	5	349	279.4	34.93	8	31.75	190	190	190.5	50.8
ASME 16.5	900	6	381	317.5	31.75	12	28.58	190	195	234.95	55.63
ASME 16.5	900	8	470	393.7	38.1	12	34.93	220	220	298.45	63.5
ASME 16.5	900	10	546	469.9	38.1	16	34.93	235	235	368.3	69.85
ASME 16.5	900	12	610	533.4	38.1	20	34.93	255	255	419.1	79.25
ASME 16.5	900	14	641	558.8	41.28	20	38.1	275	280	450.85	85.85
ASME 16.5	900	16	705	616	44.45	20	41.28	285	290	508	88.9
ASME 16.5	900	18	787	685.8	50.8	20	47.63	325	335	565.15	101.6
ASME 16.5	900	20	857	749.3	53.98	20	50.8	350	360	622.3	107.95
ASME 16.5	900	24	1041	901.7	66.68	20	63.5	440	455	749.3	139.7
ASME 16.5	1500	1/2	121	82.6	22.23	4	19.05	110	100	38.1	22.35
ASME 16.5	1500	3/4	130	88.9	22.23	4	19.05	115	110	44.45	25.4
ASME 16.5	1500	1	149	101.6	25.4	4	22.23	125	120	52.324	28.45
ASME 16.5	1500	1 1/4	159	111.1	25.4	4	22.23	125	120	63.5	28.45
ASME 16.5	1500	1 1/2	178	124	28.58	4	25.4	140	135	69.85	31.75
ASME 16.5	1500	2	216	165.1	25.4	8	22.23	145	140	104.648	38.1
ASME 16.5	1500	2 1/2	244	190.5	28.58	8	25.4	160	150	123.952	41.15
ASME 16.5	1500	3	267	203.2	28.58	8	28.58	180	170	133.35	47.75
ASME 16.5	1500	4	311	241.3	34.93	8	31.75	195	190	162.052	53.85
ASME 16.5	1500	5	375	292.1	41.28	8	38.1	250	240	196.85	73.15
ASME 16.5	1500	6	394	317.5	38.1	12	34.93	260	255	228.6	82.55
ASME 16.5	1500	8	483	393.7	44.45	12	41.28	290	285	292.1	91.95
ASME 16.5	1500	10	584	482.6	50.8	12	47.63	335	330	368.3	107.95
ASME 16.5	1500	12	673	571.5	53.98	16	50.8	375	370	450.85	123.95
ASME 16.5	1500	14	749	635	60.33	16	57.15	405	400	495.3	133.35
ASME 16.5	1500	16	826	704.8	66.68	16	63.5	445	440	552.45	146.05
ASME 16.5	1500	18	914	774.7	73.03	16	69.85	495	490	596.9	162.05
ASME 16.5	1500	20	984	831.8	79.38	16	76.2	540	535	641.35	177.8
ASME 16.5	1500	24	1168	990.6	92.08	16	76.2	615	610	762	203.2
ASME 16.5	2500	1/2	133	88.9	22.23	4	19.05	120	115	42.926	30.23
ASME 16.5	2500	3/4	140	95.2	22.23	4	19.05	125	120	50.8	31.75
ASME 16.5	2500	1	159	108	25.4	4	22.23	140	135	57.15	35.05
ASME 16.5	2500	1 1/4	184	130	28.58	4	25.4	150	145	73.152	38.1
ASME 16.5	2500	1 1/2	203	146	31.75	4	28.58	170	165	79.248	44.45
ASME 16.5	2500	2	235	171.4	28.58	8	25.4	180	170	95.25	50.8
ASME 16.5	2500	2 1/2	267	196.8	31.75	8	28.58	195	190	114.3	57.15
ASME 16.5	2500	3	305	228.6	34.93	8	31.75	220	215	133.35	66.55
ASME 16.5	2500	4	356	273	41.28	8	38.1	255	250	165.1	76.2
ASME 16.5	2500	5	419	323.8	47.63	8	44.45	300	290	203.2	91.95
ASME 16.5	2500	6	483	368.3	53.98	8	50.8	345	335	234.95	107.95
ASME 16.5	2500	8	552	438.2	53.98	12	50.8	380	375	304.8	127
ASME 16.5	2500	10	673	539.8	66.68	12	63.5	490	485	374.65	165.1
ASME 16.5	2500	12	762	619.3	73.03	12	69.85	540	535	441.452	184.15

Tbl. 4.F.9

Socket Welding (NPS 1/2 to 3 Only) Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thickness Flange (tf)	Depth of socket (D)
ASME 16.5	400	1/2	3.75	2.62	0.63	4	0.5	-	-	1.5	0.56	0.38
ASME 16.5	400	3/4	4.62	3.25	0.75	4	0.63	-	-	1.88	0.62	0.44
ASME 16.5	400	1	4.88	3.5	0.75	4	0.63	-	-	2.12	0.69	0.5
ASME 16.5	400	1 1/4	5.25	3.88	0.75	4	0.63	-	-	2.5	0.81	0.56
ASME 16.5	400	1 1/2	6.12	4.5	0.88	4	0.75	-	-	2.75	0.88	0.62
ASME 16.5	400	2	6.5	5	0.75	8	0.63	-	-	3.31	1	0.69
ASME 16.5	400	2 1/2	7.5	5.88	0.88	8	0.75	-	-	3.94	1.12	0.75
ASME 16.5	400	3	8.25	6.62	0.88	8	0.75	-	-	4.62	1.25	0.81
ASME 16.5	400	3 1/2	9	7.25	1	8	0.88	-	-	5.25	1.38	-
ASME 16.5	400	4	10	7.88	1	8	0.88	5.5	5.25	5.75	1.38	-
ASME 16.5	400	5	11	9.25	1	8	0.88	5.75	5.25	7	1.5	-
ASME 16.5	400	6	12.5	10.62	1	12	0.88	6	5.75	8.12	1.62	-
ASME 16.5	400	8	15	13	1.13	12	1	6.75	6.5	10.25	1.88	-
ASME 16.5	400	10	17.5	15.25	1.25	16	1.13	7.5	7.25	12.62	2.12	-
ASME 16.5	400	12	20.5	17.75	1.38	16	1.25	8	7.75	14.75	2.25	-
ASME 16.5	400	14	23	20.25	1.38	20	1.25	8.25	8	16.75	2.38	-
ASME 16.5	400	16	25.5	23	1.5	20	1.38	8.75	8.5	19	2.5	-
ASME 16.5	400	18	28	24.75	1.5	24	1.38	9	8.75	21	2.62	-
ASME 16.5	400	20	30.5	27	1.63	24	1.5	9.5	9.25	23.12	2.75	-
ASME 16.5	400	22	33	29.25	1.75	24	1.63	10	9.75	25.25	2.88	-
ASME 16.5	400	24	36	32	1.88	24	1.75	10.5	10.25	27.62	3	-
ASME 16.5	600	1/2	3.75	2.62	0.63	4	0.5	3	2.75	1.5	0.56	0.38
ASME 16.5	600	3/4	4.62	3.25	0.75	4	0.63	3.5	3.25	1.88	0.62	0.44
ASME 16.5	600	1	4.88	3.5	0.75	4	0.63	3.5	3.25	2.12	0.69	0.5
ASME 16.5	600	1 1/4	5.25	3.88	0.75	4	0.63	3.75	3.5	2.5	0.81	0.56
ASME 16.5	600	1 1/2	6.12	4.5	0.88	4	0.75	4.25	4	2.75	0.88	0.62
ASME 16.5	600	2	6.5	5	0.75	8	0.63	4.25	4	3.31	1	0.69
ASME 16.5	600	2 1/2	7.5	5.88	0.88	8	0.75	4.75	4.5	3.94	1.12	0.75
ASME 16.5	600	3	8.25	6.62	0.88	8	0.75	5	4.75	4.62	1.25	0.81
ASME 16.5	600	3 1/2	9	7.25	1	8	0.88	5.5	5.25	5.25	1.38	…
ASME 16.5	600	4	10.75	8.5	1	8	0.88	5.75	5.5	6	1.5	…
ASME 16.5	600	5	13	10.5	1.13	8	1	6.5	6.25	7.44	1.75	…
ASME 16.5	600	6	14	11.5	1.13	12	1	6.75	6.5	8.75	1.88	…
ASME 16.5	600	8	16.5	13.75	1.25	12	1.13	7.5	7.25	10.75	2.19	…
ASME 16.5	600	10	20	17	1.38	16	1.25	8.5	8.25	13.5	2.5	…
ASME 16.5	600	12	22	19.25	1.38	20	1.25	8.75	8.5	15.75	2.62	…
ASME 16.5	600	14	23.75	20.75	1.5	20	1.38	9.25	9	17	2.75	…
ASME 16.5	600	16	27	23.75	1.63	20	1.5	10	9.75	19.5	3	…
ASME 16.5	600	18	29.25	25.75	1.75	20	1.63	10.75	10.5	21.5	3.25	…
ASME 16.5	600	20	32	28.5	1.75	24	1.63	11.25	11	24	3.5	…
ASME 16.5	600	22	34.25	30.62	1.88	24	1.75	12	…	26.25	3.75	…
ASME 16.5	600	24	37	33	2	24	1.88	13	12.75	28.25	4	…
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	9.5	7.5	1	8	0.88	5.75	5.75	5	1.5	-
ASME 16.5	900	4	11.5	9.25	1.25	8	1.13	6.75	6.75	6.25	1.75	-
ASME 16.5	900	5	13.75	11	1.38	8	1.25	7.5	7.5	7.5	2	-
ASME 16.5	900	6	15	12.5	1.25	12	1.13	7.5	7.75	9.25	2.19	-
ASME 16.5	900	8	18.5	15.5	1.5	12	1.38	8.75	8.75	11.75	2.5	-
ASME 16.5	900	10	21.5	18.5	1.5	16	1.38	9.25	9.25	14.5	2.75	-
ASME 16.5	900	12	24	21	1.5	20	1.38	10	10	16.5	3.12	-
ASME 16.5	900	14	25.25	22	1.63	20	1.5	10.75	11	17.75	3.38	-
ASME 16.5	900	16	27.75	24.25	1.75	20	1.63	11.25	11.5	20	3.5	-
ASME 16.5	900	18	31	27	2	20	1.88	12.75	13.25	22.25	4	-
ASME 16.5	900	20	33.75	29.5	2.13	20	2	13.75	14.25	24.5	4.25	-
ASME 16.5	900	24	41	35.5	2.63	20	2.5	17.25	18	29.5	5.5	-
ASME 16.5	1500	1/2	4.75	3.25	0.88	4	0.75	4.25	4	1.5	0.88	0.38
ASME 16.5	1500	3/4	5.12	3.5	0.88	4	0.75	4.5	4.25	1.75	1	0.44
ASME 16.5	1500	1	5.88	4	1	4	0.88	5	4.75	2.06	1.12	0.5
ASME 16.5	1500	1 1/4	6.25	4.38	1	4	0.88	5	4.75	2.5	1.12	0.56
ASME 16.5	1500	1 1/2	7	4.88	1.13	4	1	5.5	5.25	2.75	1.25	0.62
ASME 16.5	1500	2	8.5	6.5	1	8	0.88	5.75	5.5	4.12	1.5	0.69
ASME 16.5	1500	2 1/2	9.62	7.5	1.13	8	1	6.25	6	4.88	1.62	0.75
ASME 16.5	1500	3	10.5	8	1.13	8	1.13	7	6.75	5.25	1.88	…
ASME 16.5	1500	4	12.25	9.5	1.38	8	1.25	7.75	7.5	6.38	2.12	…
ASME 16.5	1500	5	14.75	11.5	1.63	8	1.5	9.75	9.5	7.75	2.88	…
ASME 16.5	1500	6	15.5	12.5	1.5	12	1.38	10.25	10	9	3.25	…
ASME 16.5	1500	8	19	15.5	1.75	12	1.63	11.5	11.25	11.5	3.62	…
ASME 16.5	1500	10	23	19	2	12	1.88	13.25	13	14.5	4.25	…
ASME 16.5	1500	12	26.5	22.5	2.13	16	2	14.75	14.5	17.75	4.88	…
ASME 16.5	1500	14	29.5	25	2.38	16	2.25	16	15.75	19.5	5.25	…
ASME 16.5	1500	16	32.5	27.75	2.63	16	2.5	17.5	17.25	21.75	5.75	…
ASME 16.5	1500	18	36	30.5	2.88	16	2.75	19.5	19.25	23.5	6.38	…
ASME 16.5	1500	20	38.75	32.75	3.13	16	3	21.25	21	25.25	7	…
ASME 16.5	1500	24	46	39	3.63	16	3	24.25	24	30	8	…
ASME 16.5	2500	1/2	5.25	3.5	0.88	4	0.75	4.75	4.5	1.69	1.19	-
ASME 16.5	2500	3/4	5.5	3.75	0.88	4	0.75	5	4.75	2	1.25	-
ASME 16.5	2500	1	6.25	4.25	1	4	0.88	5.5	5.25	2.25	1.38	-
ASME 16.5	2500	1 1/4	7.25	5.12	1.13	4	1	6	5.75	2.88	1.5	-
ASME 16.5	2500	1 1/2	8	5.75	1.25	4	1.13	6.75	6.5	3.12	1.75	-
ASME 16.5	2500	2	9.25	6.75	1.13	8	1	7	6.75	3.75	2	-
ASME 16.5	2500	2 1/2	10.5	7.75	1.25	8	1.13	7.75	7.5	4.5	2.25	-
ASME 16.5	2500	3	12	9	1.38	8	1.25	8.75	8.5	5.25	2.62	-
ASME 16.5	2500	4	14	10.75	1.63	8	1.5	10	9.75	6.5	3	-
ASME 16.5	2500	5	16.5	12.75	1.88	8	1.75	11.75	11.5	8	3.62	-
ASME 16.5	2500	6	19	14.5	2.13	8	2	13.5	13.25	9.25	4.25	-
ASME 16.5	2500	8	21.75	17.25	2.13	12	2	15	14.75	12	5	-
ASME 16.5	2500	10	26.5	21.25	2.63	12	2.5	19.25	19	14.75	6.5	-
ASME 16.5	2500	12	30	24.38	2.88	12	2.75	21.25	21	17.38	7.25	-

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thickness Flange (tf)	Depth of socket (D)
ASME 16.5	400	1/2	95	66.5	15.88	4	12.7	-	-	38.1	14.224	-
ASME 16.5	400	3/4	117	82.6	19.05	4	15.88	-	-	47.752	15.748	-
ASME 16.5	400	1	124	88.9	19.05	4	15.88	-	-	53.848	17.526	-
ASME 16.5	400	1 1/4	133	98.6	19.05	4	15.88	-	-	63.5	20.574	-
ASME 16.5	400	1 1/2	155	114.3	22.23	4	19.05	-	-	69.85	22.352	-
ASME 16.5	400	2	165	127	19.05	8	15.88	-	-	84.074	25.4	-
ASME 16.5	400	2 1/2	190	149.4	22.23	8	19.05	-	-	100.076	28.448	-
ASME 16.5	400	3	210	168.1	22.23	8	19.05	-	-	117.348	31.75	-
ASME 16.5	400	3 1/2	229	184.2	25.4	8	22.23	-	-	133.35	35.052	-
ASME 16.5	400	4	254	200.2	25.4	8	22.23	140	135	146.05	35.052	-
ASME 16.5	400	5	279	235	25.4	8	22.23	145	135	177.8	38.1	-
ASME 16.5	400	6	318	269.7	25.4	12	22.23	150	145	206.248	41.15	-
ASME 16.5	400	8	381	330.2	28.58	12	25.4	170	165	260.35	47.75	-
ASME 16.5	400	10	444	387.4	31.75	16	28.58	190	185	320.548	53.85	-
ASME 16.5	400	12	521	450.8	34.93	16	31.75	205	195	374.65	57.15	-
ASME 16.5	400	14	584	514.4	34.93	20	31.75	210	205	425.45	60.45	-
ASME 16.5	400	16	648	571.5	38.1	20	34.93	220	215	482.6	63.5	-
ASME 16.5	400	18	711	628.6	38.1	24	34.93	230	220	533.4	66.55	-
ASME 16.5	400	20	775	685.8	41.28	24	38.1	240	235	587.248	69.85	-
ASME 16.5	400	22	838	743	44.45	24	41.28	255	250	641.35	73.15	-
ASME 16.5	400	24	914	812.8	47.63	24	44.45	265	260	701.548	76.2	-
ASME 16.5	600	1/2	95	66.5	15.88	4	12.7	75	70	38.1	14.22	10
ASME 16.5	600	3/4	117	82.6	19.05	4	15.88	90	85	47.752	15.75	11
ASME 16.5	600	1	124	88.9	19.05	4	15.88	90	85	53.848	17.53	13
ASME 16.5	600	1 1/4	133	98.6	19.05	4	15.88	95	90	63.5	20.57	14
ASME 16.5	600	1 1/2	155	114.3	22.23	4	19.05	110	100	69.85	22.35	16
ASME 16.5	600	2	165	127	19.05	8	15.88	110	100	84.074	25.4	18
ASME 16.5	600	2 1/2	190	149.4	22.23	8	19.05	120	115	100.076	28.45	19
ASME 16.5	600	3	210	168.1	22.23	8	19.05	125	120	117.348	31.75	21
ASME 16.5	600	3 1/2	229	184.2	25.4	8	22.23	140	135	133.35	35.05	…
ASME 16.5	600	4	273	215.9	25.4	8	22.23	145	140	152.4	38.1	…
ASME 16.5	600	5	330	266.7	28.58	8	25.4	165	160	188.976	44.45	…
ASME 16.5	600	6	356	292.1	28.58	12	25.4	170	165	222.25	47.75	…
ASME 16.5	600	8	419	349.2	31.75	12	28.58	190	185	273.05	55.63	…
ASME 16.5	600	10	508	431.8	34.93	16	31.75	215	210	342.9	63.5	…
ASME 16.5	600	12	559	489	34.93	20	31.75	220	215	400.05	66.55	…
ASME 16.5	600	14	603	527	38.1	20	34.93	235	230	431.8	69.85	…
ASME 16.5	600	16	686	603.2	41.28	20	38.1	255	250	495.3	76.2	…
ASME 16.5	600	18	743	654	44.45	20	41.28	275	265	546.1	82.55	…
ASME 16.5	600	20	813	723.9	44.45	24	41.28	285	280	609.6	88.9	…
ASME 16.5	600	22	870	777.7	47.63	24	44.45	305	…	666.75	95.25	…
ASME 16.5	600	24	940	838.2	50.8	24	47.63	330	325	717.55	101.6	…
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	241	190.5	25.4	8	22.23	145	145	127	38.1	-
ASME 16.5	900	4	292	235	31.75	8	28.58	170	170	158.75	44.45	-
ASME 16.5	900	5	349	279.4	34.93	8	31.75	190	190	190.5	50.8	-
ASME 16.5	900	6	381	317.5	31.75	12	28.58	190	195	234.95	55.63	-
ASME 16.5	900	8	470	393.7	38.1	12	34.93	220	220	298.45	63.5	-
ASME 16.5	900	10	546	469.9	38.1	16	34.93	235	235	368.3	69.85	-
ASME 16.5	900	12	610	533.4	38.1	20	34.93	255	255	419.1	79.25	-
ASME 16.5	900	14	641	558.8	41.28	20	38.1	275	280	450.85	85.85	-
ASME 16.5	900	16	705	616	44.45	20	41.28	285	290	508	88.9	-
ASME 16.5	900	18	787	685.8	50.8	20	47.63	325	335	565.15	101.6	-
ASME 16.5	900	20	857	749.3	53.98	20	50.8	350	360	622.3	107.95	-
ASME 16.5	900	24	1041	901.7	66.68	20	63.5	440	455	749.3	139.7	-
ASME 16.5	1500	1/2	121	82.6	22.23	4	19.05	110	100	38.1	22.35	10
ASME 16.5	1500	3/4	130	88.9	22.23	4	19.05	115	110	44.45	25.4	11
ASME 16.5	1500	1	149	101.6	25.4	4	22.23	125	120	52.324	28.45	13
ASME 16.5	1500	1 1/4	159	111.1	25.4	4	22.23	125	120	63.5	28.45	14
ASME 16.5	1500	1 1/2	178	124	28.58	4	25.4	140	135	69.85	31.75	16
ASME 16.5	1500	2	216	165.1	25.4	8	22.23	145	140	104.648	38.1	18
ASME 16.5	1500	2 1/2	244	190.5	28.58	8	25.4	160	150	123.952	41.15	19
ASME 16.5	1500	3	267	203.2	28.58	8	28.58	180	170	133.35	47.75	…
ASME 16.5	1500	4	311	241.3	34.93	8	31.75	195	190	162.052	53.85	…
ASME 16.5	1500	5	375	292.1	41.28	8	38.1	250	240	196.85	73.15	…
ASME 16.5	1500	6	394	317.5	38.1	12	34.93	260	255	228.6	82.55	…
ASME 16.5	1500	8	483	393.7	44.45	12	41.28	290	285	292.1	91.95	…
ASME 16.5	1500	10	584	482.6	50.8	12	47.63	335	330	368.3	107.95	…
ASME 16.5	1500	12	673	571.5	53.98	16	50.8	375	370	450.85	123.95	…
ASME 16.5	1500	14	749	635	60.33	16	57.15	405	400	495.3	133.35	…
ASME 16.5	1500	16	826	704.8	66.68	16	63.5	445	440	552.45	146.05	…
ASME 16.5	1500	18	914	774.7	73.03	16	69.85	495	490	596.9	162.05	…
ASME 16.5	1500	20	984	831.8	79.38	16	76.2	540	535	641.35	177.8	…
ASME 16.5	1500	24	1168	990.6	92.08	16	76.2	615	610	762	203.2	…
ASME 16.5	2500	1/2	133	88.9	22.23	4	19.05	120	115	42.926	30.23	-
ASME 16.5	2500	3/4	140	95.2	22.23	4	19.05	125	120	50.8	31.75	-
ASME 16.5	2500	1	159	108	25.4	4	22.23	140	135	57.15	35.05	-
ASME 16.5	2500	1 1/4	184	130	28.58	4	25.4	150	145	73.152	38.1	-
ASME 16.5	2500	1 1/2	203	146	31.75	4	28.58	170	165	79.248	44.45	-
ASME 16.5	2500	2	235	171.4	28.58	8	25.4	180	170	95.25	50.8	-
ASME 16.5	2500	2 1/2	267	196.8	31.75	8	28.58	195	190	114.3	57.15	-
ASME 16.5	2500	3	305	228.6	34.93	8	31.75	220	215	133.35	66.55	-
ASME 16.5	2500	4	356	273	41.28	8	38.1	255	250	165.1	76.2	-
ASME 16.5	2500	5	419	323.8	47.63	8	44.45	300	290	203.2	91.95	-
ASME 16.5	2500	6	483	368.3	53.98	8	50.8	345	335	234.95	107.95	-
ASME 16.5	2500	8	552	438.2	53.98	12	50.8	380	375	304.8	127	-
ASME 16.5	2500	10	673	539.8	66.68	12	63.5	490	485	374.65	165.1	-
ASME 16.5	2500	12	762	619.3	73.03	12	69.85	540	535	441.452	184.15	-

Tbl. 4.F.10

Welding Neck Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thickness Flange (tf)	Diameter Beginning Chamfer Welding Neck (A)	Length Through Hub Bore Welding Neck (Y3)
ASME 16.5	400	1/2	3.75	2.62	0.63	4	0.5	-	-	1.5	0.56	0.84	2.06
ASME 16.5	400	3/4	4.62	3.25	0.75	4	0.63	-	-	1.88	0.62	1.05	2.25
ASME 16.5	400	1	4.88	3.5	0.75	4	0.63	-	-	2.12	0.69	1.32	2.44
ASME 16.5	400	1 1/4	5.25	3.88	0.75	4	0.63	-	-	2.5	0.81	1.66	2.62
ASME 16.5	400	1 1/2	6.12	4.5	0.88	4	0.75	-	-	2.75	0.88	1.9	2.75
ASME 16.5	400	2	6.5	5	0.75	8	0.63	-	-	3.31	1	2.38	2.88
ASME 16.5	400	2 1/2	7.5	5.88	0.88	8	0.75	-	-	3.94	1.12	2.88	3.12
ASME 16.5	400	3	8.25	6.62	0.88	8	0.75	-	-	4.62	1.25	3.5	3.25
ASME 16.5	400	3 1/2	9	7.25	1	8	0.88	-	-	5.25	1.38	4	3.38
ASME 16.5	400	4	10	7.88	1	8	0.88	5.5	5.25	5.75	1.38	4.5	3.5
ASME 16.5	400	5	11	9.25	1	8	0.88	5.75	5.25	7	1.5	5.56	4
ASME 16.5	400	6	12.5	10.62	1	12	0.88	6	5.75	8.12	1.62	6.63	4.06
ASME 16.5	400	8	15	13	1.13	12	1	6.75	6.5	10.25	1.88	8.63	4.62
ASME 16.5	400	10	17.5	15.25	1.25	16	1.13	7.5	7.25	12.62	2.12	10.75	4.88
ASME 16.5	400	12	20.5	17.75	1.38	16	1.25	8	7.75	14.75	2.25	12.75	5.38
ASME 16.5	400	14	23	20.25	1.38	20	1.25	8.25	8	16.75	2.38	14	5.88
ASME 16.5	400	16	25.5	23	1.5	20	1.38	8.75	8.5	19	2.5	16	6
ASME 16.5	400	18	28	24.75	1.5	24	1.38	9	8.75	21	2.62	18	6.5
ASME 16.5	400	20	30.5	27	1.63	24	1.5	9.5	9.25	23.12	2.75	20	6.62
ASME 16.5	400	22	33	29.25	1.75	24	1.63	10	9.75	25.25	2.88	22	6.75
ASME 16.5	400	24	36	32	1.88	24	1.75	10.5	10.25	27.62	3	24	6.88
ASME 16.5	600	1/2	3.75	2.62	0.63	4	0.5	3	2.75	1.5	0.56	0.84	2.06
ASME 16.5	600	3/4	4.62	3.25	0.75	4	0.63	3.5	3.25	1.88	0.62	1.05	2.25
ASME 16.5	600	1	4.88	3.5	0.75	4	0.63	3.5	3.25	2.12	0.69	1.32	2.44
ASME 16.5	600	1 1/4	5.25	3.88	0.75	4	0.63	3.75	3.5	2.5	0.81	1.66	2.62
ASME 16.5	600	1 1/2	6.12	4.5	0.88	4	0.75	4.25	4	2.75	0.88	1.9	2.75
ASME 16.5	600	2	6.5	5	0.75	8	0.63	4.25	4	3.31	1	2.38	2.88
ASME 16.5	600	2 1/2	7.5	5.88	0.88	8	0.75	4.75	4.5	3.94	1.12	2.88	3.12
ASME 16.5	600	3	8.25	6.62	0.88	8	0.75	5	4.75	4.62	1.25	3.5	3.25
ASME 16.5	600	3 1/2	9	7.25	1	8	0.88	5.5	5.25	5.25	1.38	4	3.38
ASME 16.5	600	4	10.75	8.5	1	8	0.88	5.75	5.5	6	1.5	4.5	4
ASME 16.5	600	5	13	10.5	1.13	8	1	6.5	6.25	7.44	1.75	5.56	4.5
ASME 16.5	600	6	14	11.5	1.13	12	1	6.75	6.5	8.75	1.88	6.63	4.62
ASME 16.5	600	8	16.5	13.75	1.25	12	1.13	7.5	7.25	10.75	2.19	8.63	5.25
ASME 16.5	600	10	20	17	1.38	16	1.25	8.5	8.25	13.5	2.5	10.75	6
ASME 16.5	600	12	22	19.25	1.38	20	1.25	8.75	8.5	15.75	2.62	12.75	6.12
ASME 16.5	600	14	23.75	20.75	1.5	20	1.38	9.25	9	17	2.75	14	6.5
ASME 16.5	600	16	27	23.75	1.63	20	1.5	10	9.75	19.5	3	16	7
ASME 16.5	600	18	29.25	25.75	1.75	20	1.63	10.75	10.5	21.5	3.25	18	7.25
ASME 16.5	600	20	32	28.5	1.75	24	1.63	11.25	11	24	3.5	20	7.5
ASME 16.5	600	22	34.25	30.62	1.88	24	1.75	12	…	26.25	3.75	22	7.75
ASME 16.5	600	24	37	33	2	24	1.88	13	12.75	28.25	4	24	8
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	9.5	7.5	1	8	0.88	5.75	5.75	5	1.5	3.5	4
ASME 16.5	900	4	11.5	9.25	1.25	8	1.13	6.75	6.75	6.25	1.75	4.5	4.5
ASME 16.5	900	5	13.75	11	1.38	8	1.25	7.5	7.5	7.5	2	5.56	5
ASME 16.5	900	6	15	12.5	1.25	12	1.13	7.5	7.75	9.25	2.19	6.63	5.5
ASME 16.5	900	8	18.5	15.5	1.5	12	1.38	8.75	8.75	11.75	2.5	8.63	6.38
ASME 16.5	900	10	21.5	18.5	1.5	16	1.38	9.25	9.25	14.5	2.75	10.75	7.25
ASME 16.5	900	12	24	21	1.5	20	1.38	10	10	16.5	3.12	12.75	7.88
ASME 16.5	900	14	25.25	22	1.63	20	1.5	10.75	11	17.75	3.38	14	8.38
ASME 16.5	900	16	27.75	24.25	1.75	20	1.63	11.25	11.5	20	3.5	16	8.5
ASME 16.5	900	18	31	27	2	20	1.88	12.75	13.25	22.25	4	18	9
ASME 16.5	900	20	33.75	29.5	2.13	20	2	13.75	14.25	24.5	4.25	20	9.75
ASME 16.5	900	24	41	35.5	2.63	20	2.5	17.25	18	29.5	5.5	24	11.5
ASME 16.5	1500	1/2	4.75	3.25	0.88	4	0.75	4.25	4	1.5	0.88	0.84	2.28
ASME 16.5	1500	3/4	5.12	3.5	0.88	4	0.75	4.5	4.25	1.75	1	1.05	2.75
ASME 16.5	1500	1	5.88	4	1	4	0.88	5	4.75	2.06	1.12	1.32	2.88
ASME 16.5	1500	1 1/4	6.25	4.38	1	4	0.88	5	4.75	2.5	1.12	1.66	2.88
ASME 16.5	1500	1 1/2	7	4.88	1.13	4	1	5.5	5.25	2.75	1.25	1.9	3.25
ASME 16.5	1500	2	8.5	6.5	1	8	0.88	5.75	5.5	4.12	1.5	2.38	4
ASME 16.5	1500	2 1/2	9.62	7.5	1.13	8	1	6.25	6	4.88	1.62	2.88	4.12
ASME 16.5	1500	3	10.5	8	1.13	8	1.13	7	6.75	5.25	1.88	3.5	4.62
ASME 16.5	1500	4	12.25	9.5	1.38	8	1.25	7.75	7.5	6.38	2.12	4.5	4.88
ASME 16.5	1500	5	14.75	11.5	1.63	8	1.5	9.75	9.5	7.75	2.88	5.56	6.12
ASME 16.5	1500	6	15.5	12.5	1.5	12	1.38	10.25	10	9	3.25	6.63	6.75
ASME 16.5	1500	8	19	15.5	1.75	12	1.63	11.5	11.25	11.5	3.62	8.63	8.38
ASME 16.5	1500	10	23	19	2	12	1.88	13.25	13	14.5	4.25	10.75	10
ASME 16.5	1500	12	26.5	22.5	2.13	16	2	14.75	14.5	17.75	4.88	12.75	11.12
ASME 16.5	1500	14	29.5	25	2.38	16	2.25	16	15.75	19.5	5.25	14	11.75
ASME 16.5	1500	16	32.5	27.75	2.63	16	2.5	17.5	17.25	21.75	5.75	16	12.25
ASME 16.5	1500	18	36	30.5	2.88	16	2.75	19.5	19.25	23.5	6.38	18	12.88
ASME 16.5	1500	20	38.75	32.75	3.13	16	3	21.25	21	25.25	7	20	14
ASME 16.5	1500	24	46	39	3.63	16	3	24.25	24	30	8	24	16
ASME 16.5	2500	1/2	5.25	3.5	0.88	4	0.75	4.75	4.5	1.69	1.19	0.84	2.88
ASME 16.5	2500	3/4	5.5	3.75	0.88	4	0.75	5	4.75	2	1.25	1.05	3.12
ASME 16.5	2500	1	6.25	4.25	1	4	0.88	5.5	5.25	2.25	1.38	1.32	3.5
ASME 16.5	2500	1 1/4	7.25	5.12	1.13	4	1	6	5.75	2.88	1.5	1.66	3.75
ASME 16.5	2500	1 1/2	8	5.75	1.25	4	1.13	6.75	6.5	3.12	1.75	1.9	4.38
ASME 16.5	2500	2	9.25	6.75	1.13	8	1	7	6.75	3.75	2	2.38	5
ASME 16.5	2500	2 1/2	10.5	7.75	1.25	8	1.13	7.75	7.5	4.5	2.25	2.88	5.62
ASME 16.5	2500	3	12	9	1.38	8	1.25	8.75	8.5	5.25	2.62	3.5	6.62
ASME 16.5	2500	4	14	10.75	1.63	8	1.5	10	9.75	6.5	3	4.5	7.5
ASME 16.5	2500	5	16.5	12.75	1.88	8	1.75	11.75	11.5	8	3.62	5.56	9
ASME 16.5	2500	6	19	14.5	2.13	8	2	13.5	13.25	9.25	4.25	6.63	10.75
ASME 16.5	2500	8	21.75	17.25	2.13	12	2	15	14.75	12	5	8.63	12.5
ASME 16.5	2500	10	26.5	21.25	2.63	12	2.5	19.25	19	14.75	6.5	10.75	16.5
ASME 16.5	2500	12	30	24.38	2.88	12	2.75	21.25	21	17.38	7.25	12.75	18.25

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thickness Flange (tf)	Diameter Beginning Chamfer Welding Neck (A)	Length Through Bore- Welding Neck (Y3)
ASME 16.5	400	1/2	95	66.5	15.88	4	12.7	-	-	38.1	14.224	-	-
ASME 16.5	400	3/4	117	82.6	19.05	4	15.88	-	-	47.752	15.748	-	-
ASME 16.5	400	1	124	88.9	19.05	4	15.88	-	-	53.848	17.526	-	-
ASME 16.5	400	1 1/4	133	98.6	19.05	4	15.88	-	-	63.5	20.574	-	-
ASME 16.5	400	1 1/2	155	114.3	22.23	4	19.05	-	-	69.85	22.352	-	-
ASME 16.5	400	2	165	127	19.05	8	15.88	-	-	84.074	25.4	-	-
ASME 16.5	400	2 1/2	190	149.4	22.23	8	19.05	-	-	100.076	28.448	-	-
ASME 16.5	400	3	210	168.1	22.23	8	19.05	-	-	117.348	31.75	-	-
ASME 16.5	400	3 1/2	229	184.2	25.4	8	22.23	-	-	133.35	35.052	-	-
ASME 16.5	400	4	254	200.2	25.4	8	22.23	140	135	146.05	35.052	114.3	51
ASME 16.5	400	5	279	235	25.4	8	22.23	145	135	177.8	38.1	141.2	54
ASME 16.5	400	6	318	269.7	25.4	12	22.23	150	145	206.248	41.15	168.4	57
ASME 16.5	400	8	381	330.2	28.58	12	25.4	170	165	260.35	47.75	219.2	68
ASME 16.5	400	10	444	387.4	31.75	16	28.58	190	185	320.548	53.85	273	73
ASME 16.5	400	12	521	450.8	34.93	16	31.75	205	195	374.65	57.15	323.8	79
ASME 16.5	400	14	584	514.4	34.93	20	31.75	210	205	425.45	60.45	355.6	84
ASME 16.5	400	16	648	571.5	38.1	20	34.93	220	215	482.6	63.5	406.4	94
ASME 16.5	400	18	711	628.6	38.1	24	34.93	230	220	533.4	66.55	457.2	99
ASME 16.5	400	20	775	685.8	41.28	24	38.1	240	235	587.248	69.85	508	102
ASME 16.5	400	22	838	743	44.45	24	41.28	255	250	641.35	73.15	558.8	108
ASME 16.5	400	24	914	812.8	47.63	24	44.45	265	260	701.548	76.2	609.6	114
ASME 16.5	600	1/2	95	66.5	15.88	4	12.7	75	70	38.1	14.22	21.3	22
ASME 16.5	600	3/4	117	82.6	19.05	4	15.88	90	85	47.752	15.75	26.7	25
ASME 16.5	600	1	124	88.9	19.05	4	15.88	90	85	53.848	17.53	33.5	27
ASME 16.5	600	1 1/4	133	98.6	19.05	4	15.88	95	90	63.5	20.57	42.2	28
ASME 16.5	600	1 1/2	155	114.3	22.23	4	19.05	110	100	69.85	22.35	48.3	32
ASME 16.5	600	2	165	127	19.05	8	15.88	110	100	84.074	25.4	60.5	37
ASME 16.5	600	2 1/2	190	149.4	22.23	8	19.05	120	115	100.076	28.45	73.2	41
ASME 16.5	600	3	210	168.1	22.23	8	19.05	125	120	117.348	31.75	88.9	46
ASME 16.5	600	3 1/2	229	184.2	25.4	8	22.23	140	135	133.35	35.05	101.6	49
ASME 16.5	600	4	273	215.9	25.4	8	22.23	145	140	152.4	38.1	114.3	54
ASME 16.5	600	5	330	266.7	28.58	8	25.4	165	160	188.976	44.45	141.2	60
ASME 16.5	600	6	356	292.1	28.58	12	25.4	170	165	222.25	47.75	168.4	67
ASME 16.5	600	8	419	349.2	31.75	12	28.58	190	185	273.05	55.63	219.2	76
ASME 16.5	600	10	508	431.8	34.93	16	31.75	215	210	342.9	63.5	273	86
ASME 16.5	600	12	559	489	34.93	20	31.75	220	215	400.05	66.55	323.8	92
ASME 16.5	600	14	603	527	38.1	20	34.93	235	230	431.8	69.85	355.6	94
ASME 16.5	600	16	686	603.2	41.28	20	38.1	255	250	495.3	76.2	406.4	106
ASME 16.5	600	18	743	654	44.45	20	41.28	275	265	546.1	82.55	457.2	117
ASME 16.5	600	20	813	723.9	44.45	24	41.28	285	280	609.6	88.9	508	127
ASME 16.5	600	22	870	777.7	47.63	24	44.45	305	…	666.75	95.25	558.8	133
ASME 16.5	600	24	940	838.2	50.8	24	47.63	330	325	717.55	101.6	609.6	140
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	241	190.5	25.4	8	22.23	145	145	127	38.1	88.9	54
ASME 16.5	900	4	292	235	31.75	8	28.58	170	170	158.75	44.45	114.3	70
ASME 16.5	900	5	349	279.4	34.93	8	31.75	190	190	190.5	50.8	141.2	79
ASME 16.5	900	6	381	317.5	31.75	12	28.58	190	195	234.95	55.63	168.4	86
ASME 16.5	900	8	470	393.7	38.1	12	34.93	220	220	298.45	63.5	219.2	102
ASME 16.5	900	10	546	469.9	38.1	16	34.93	235	235	368.3	69.85	273	108
ASME 16.5	900	12	610	533.4	38.1	20	34.93	255	255	419.1	79.25	323.8	117
ASME 16.5	900	14	641	558.8	41.28	20	38.1	275	280	450.85	85.85	355.6	130
ASME 16.5	900	16	705	616	44.45	20	41.28	285	290	508	88.9	406.4	133
ASME 16.5	900	18	787	685.8	50.8	20	47.63	325	335	565.15	101.6	457.2	152
ASME 16.5	900	20	857	749.3	53.98	20	50.8	350	360	622.3	107.95	508	159
ASME 16.5	900	24	1041	901.7	66.68	20	63.5	440	455	749.3	139.7	609.6	203
ASME 16.5	1500	1/2	121	82.6	22.23	4	19.05	110	100	38.1	22.35	21.3	32
ASME 16.5	1500	3/4	130	88.9	22.23	4	19.05	115	110	44.45	25.4	26.7	35
ASME 16.5	1500	1	149	101.6	25.4	4	22.23	125	120	52.324	28.45	33.5	41
ASME 16.5	1500	1 1/4	159	111.1	25.4	4	22.23	125	120	63.5	28.45	42.2	41
ASME 16.5	1500	1 1/2	178	124	28.58	4	25.4	140	135	69.85	31.75	48.3	44
ASME 16.5	1500	2	216	165.1	25.4	8	22.23	145	140	104.648	38.1	60.5	57
ASME 16.5	1500	2 1/2	244	190.5	28.58	8	25.4	160	150	123.952	41.15	73.2	64
ASME 16.5	1500	3	267	203.2	28.58	8	28.58	180	170	133.35	47.75	88.9	…
ASME 16.5	1500	4	311	241.3	34.93	8	31.75	195	190	162.052	53.85	114.3	…
ASME 16.5	1500	5	375	292.1	41.28	8	38.1	250	240	196.85	73.15	141.2	…
ASME 16.5	1500	6	394	317.5	38.1	12	34.93	260	255	228.6	82.55	168.4	…
ASME 16.5	1500	8	483	393.7	44.45	12	41.28	290	285	292.1	91.95	219.2	…
ASME 16.5	1500	10	584	482.6	50.8	12	47.63	335	330	368.3	107.95	273	…
ASME 16.5	1500	12	673	571.5	53.98	16	50.8	375	370	450.85	123.95	323.8	…
ASME 16.5	1500	14	749	635	60.33	16	57.15	405	400	495.3	133.35	355.6	…
ASME 16.5	1500	16	826	704.8	66.68	16	63.5	445	440	552.45	146.05	406.4	…
ASME 16.5	1500	18	914	774.7	73.03	16	69.85	495	490	596.9	162.05	457.2	…
ASME 16.5	1500	20	984	831.8	79.38	16	76.2	540	535	641.35	177.8	508	…
ASME 16.5	1500	24	1168	990.6	92.08	16	76.2	615	610	762	203.2	609.6	…
ASME 16.5	2500	1/2	133	88.9	22.23	4	19.05	120	115	42.926	30.23	21.3	40
ASME 16.5	2500	3/4	140	95.2	22.23	4	19.05	125	120	50.8	31.75	26.7	43
ASME 16.5	2500	1	159	108	25.4	4	22.23	140	135	57.15	35.05	33.5	52
ASME 16.5	2500	1 1/4	184	130	28.58	4	25.4	150	145	73.152	38.1	42.2	60
ASME 16.5	2500	1 1/2	203	146	31.75	4	28.58	170	165	79.248	44.45	48.3	70
ASME 16.5	2500	2	235	171.4	28.58	8	25.4	180	170	95.25	50.8	60.5	79
ASME 16.5	2500	2 1/2	267	196.8	31.75	8	28.58	195	190	114.3	57.15	73.2	…
ASME 16.5	2500	3	305	228.6	34.93	8	31.75	220	215	133.35	66.55	88.9	…
ASME 16.5	2500	4	356	273	41.28	8	38.1	255	250	165.1	76.2	114.3	…
ASME 16.5	2500	5	419	323.8	47.63	8	44.45	300	290	203.2	91.95	141.2	…
ASME 16.5	2500	6	483	368.3	53.98	8	50.8	345	335	234.95	107.95	168.4	…
ASME 16.5	2500	8	552	438.2	53.98	12	50.8	380	375	304.8	127	219.2	…
ASME 16.5	2500	10	673	539.8	66.68	12	63.5	490	485	374.65	165.1	273	…
ASME 16.5	2500	12	762	619.3	73.03	12	69.85	540	535	441.452	184.15	323.8	…

Tbl. 4.F.11

Lapped Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Drilling-Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)-Raised Face	Machine Bolts (L) - Raised face	Diameter of Hub (X)	Min Thickness Flange (tf)	Bore- Min Lapped (B2)	Length Through Hub- Lapped (Y2)
ASME 16.5	400	1/2	3.75	2.62	0.63	4	0.5	-	-	1.5	0.56	0.9	0.88
ASME 16.5	400	3/4	4.62	3.25	0.75	4	0.63	-	-	1.88	0.62	1.11	1
ASME 16.5	400	1	4.88	3.5	0.75	4	0.63	-	-	2.12	0.69	1.38	1.06
ASME 16.5	400	1 1/4	5.25	3.88	0.75	4	0.63	-	-	2.5	0.81	1.72	1.12
ASME 16.5	400	1 1/2	6.12	4.5	0.88	4	0.75	-	-	2.75	0.88	1.97	1.25
ASME 16.5	400	2	6.5	5	0.75	8	0.63	-	-	3.31	1	2.46	1.44
ASME 16.5	400	2 1/2	7.5	5.88	0.88	8	0.75	-	-	3.94	1.12	2.97	1.62
ASME 16.5	400	3	8.25	6.62	0.88	8	0.75	-	-	4.62	1.25	3.6	1.81
ASME 16.5	400	3 1/2	9	7.25	1	8	0.88	-	-	5.25	1.38	4.1	1.94
ASME 16.5	400	4	10	7.88	1	8	0.88	5.5	5.25	5.75	1.38	4.63	2
ASME 16.5	400	5	11	9.25	1	8	0.88	5.75	5.25	7	1.5	5.69	2.12
ASME 16.5	400	6	12.5	10.62	1	12	0.88	6	5.75	8.12	1.62	6.75	2.25
ASME 16.5	400	8	15	13	1.13	12	1	6.75	6.5	10.25	1.88	8.75	2.69
ASME 16.5	400	10	17.5	15.25	1.25	16	1.13	7.5	7.25	12.62	2.12	10.92	4
ASME 16.5	400	12	20.5	17.75	1.38	16	1.25	8	7.75	14.75	2.25	12.92	4.25
ASME 16.5	400	14	23	20.25	1.38	20	1.25	8.25	8	16.75	2.38	14.18	4.62
ASME 16.5	400	16	25.5	23	1.5	20	1.38	8.75	8.5	19	2.5	16.19	5
ASME 16.5	400	18	28	24.75	1.5	24	1.38	9	8.75	21	2.62	18.2	5.38
ASME 16.5	400	20	30.5	27	1.63	24	1.5	9.5	9.25	23.12	2.75	20.25	5.75
ASME 16.5	400	22	33	29.25	1.75	24	1.63	10	9.75	25.25	2.88	22.25	6
ASME 16.5	400	24	36	32	1.88	24	1.75	10.5	10.25	27.62	3	24.25	6.25
ASME 16.5	600	1/2	3.75	2.62	0.63	4	0.5	3	2.75	1.5	0.56	0.9	0.88
ASME 16.5	600	3/4	4.62	3.25	0.75	4	0.63	3.5	3.25	1.88	0.62	1.11	1
ASME 16.5	600	1	4.88	3.5	0.75	4	0.63	3.5	3.25	2.12	0.69	1.38	1.06
ASME 16.5	600	1 1/4	5.25	3.88	0.75	4	0.63	3.75	3.5	2.5	0.81	1.72	1.12
ASME 16.5	600	1 1/2	6.12	4.5	0.88	4	0.75	4.25	4	2.75	0.88	1.97	1.25
ASME 16.5	600	2	6.5	5	0.75	8	0.63	4.25	4	3.31	1	2.46	1.44
ASME 16.5	600	2 1/2	7.5	5.88	0.88	8	0.75	4.75	4.5	3.94	1.12	2.97	1.62
ASME 16.5	600	3	8.25	6.62	0.88	8	0.75	5	4.75	4.62	1.25	3.6	1.81
ASME 16.5	600	3 1/2	9	7.25	1	8	0.88	5.5	5.25	5.25	1.38	4.1	1.94
ASME 16.5	600	4	10.75	8.5	1	8	0.88	5.75	5.5	6	1.5	4.6	2.12
ASME 16.5	600	5	13	10.5	1.13	8	1	6.5	6.25	7.44	1.75	5.69	2.38
ASME 16.5	600	6	14	11.5	1.13	12	1	6.75	6.5	8.75	1.88	6.75	2.62
ASME 16.5	600	8	16.5	13.75	1.25	12	1.13	7.5	7.25	10.75	2.19	8.75	3
ASME 16.5	600	10	20	17	1.38	16	1.25	8.5	8.25	13.5	2.5	10.92	4.38
ASME 16.5	600	12	22	19.25	1.38	20	1.25	8.75	8.5	15.75	2.62	12.92	4.62
ASME 16.5	600	14	23.75	20.75	1.5	20	1.38	9.25	9	17	2.75	14.18	5
ASME 16.5	600	16	27	23.75	1.63	20	1.5	10	9.75	19.5	3	16.19	5.5
ASME 16.5	600	18	29.25	25.75	1.75	20	1.63	10.75	10.5	21.5	3.25	18.2	6
ASME 16.5	600	20	32	28.5	1.75	24	1.63	11.25	11	24	3.5	20.25	6.5
ASME 16.5	600	22	34.25	30.62	1.88	24	1.75	12	…	26.25	3.75	22.25	6.88
ASME 16.5	600	24	37	33	2	24	1.88	13	12.75	28.25	4	24.25	7.25
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	9.5	7.5	1	8	0.88	5.75	5.75	5	1.5	3.6	2.12
ASME 16.5	900	4	11.5	9.25	1.25	8	1.13	6.75	6.75	6.25	1.75	4.6	2.75
ASME 16.5	900	5	13.75	11	1.38	8	1.25	7.5	7.5	7.5	2	5.69	3.12
ASME 16.5	900	6	15	12.5	1.25	12	1.13	7.5	7.75	9.25	2.19	6.75	3.38
ASME 16.5	900	8	18.5	15.5	1.5	12	1.38	8.75	8.75	11.75	2.5	8.75	4.5
ASME 16.5	900	10	21.5	18.5	1.5	16	1.38	9.25	9.25	14.5	2.75	10.92	5
ASME 16.5	900	12	24	21	1.5	20	1.38	10	10	16.5	3.12	12.92	5.62
ASME 16.5	900	14	25.25	22	1.63	20	1.5	10.75	11	17.75	3.38	14.18	6.12
ASME 16.5	900	16	27.75	24.25	1.75	20	1.63	11.25	11.5	20	3.5	16.19	6.5
ASME 16.5	900	18	31	27	2	20	1.88	12.75	13.25	22.25	4	18.2	7.5
ASME 16.5	900	20	33.75	29.5	2.13	20	2	13.75	14.25	24.5	4.25	20.25	8.25
ASME 16.5	900	24	41	35.5	2.63	20	2.5	17.25	18	29.5	5.5	24.25	10.5
ASME 16.5	1500	1/2	4.75	3.25	0.88	4	0.75	4.25	4	1.5	0.88	0.9	1.25
ASME 16.5	1500	3/4	5.12	3.5	0.88	4	0.75	4.5	4.25	1.75	1	1.11	1.38
ASME 16.5	1500	1	5.88	4	1	4	0.88	5	4.75	2.06	1.12	1.38	1.62
ASME 16.5	1500	1 1/4	6.25	4.38	1	4	0.88	5	4.75	2.5	1.12	1.72	1.62
ASME 16.5	1500	1 1/2	7	4.88	1.13	4	1	5.5	5.25	2.75	1.25	1.97	1.75
ASME 16.5	1500	2	8.5	6.5	1	8	0.88	5.75	5.5	4.12	1.5	2.46	2.25
ASME 16.5	1500	2 1/2	9.62	7.5	1.13	8	1	6.25	6	4.88	1.62	2.97	2.5
ASME 16.5	1500	3	10.5	8	1.13	8	1.13	7	6.75	5.25	1.88	3.6	2.88
ASME 16.5	1500	4	12.25	9.5	1.38	8	1.25	7.75	7.5	6.38	2.12	4.6	3.56
ASME 16.5	1500	5	14.75	11.5	1.63	8	1.5	9.75	9.5	7.75	2.88	5.69	4.12
ASME 16.5	1500	6	15.5	12.5	1.5	12	1.38	10.25	10	9	3.25	6.75	4.69
ASME 16.5	1500	8	19	15.5	1.75	12	1.63	11.5	11.25	11.5	3.62	8.75	5.62
ASME 16.5	1500	10	23	19	2	12	1.88	13.25	13	14.5	4.25	10.92	7
ASME 16.5	1500	12	26.5	22.5	2.13	16	2	14.75	14.5	17.75	4.88	12.92	8.62
ASME 16.5	1500	14	29.5	25	2.38	16	2.25	16	15.75	19.5	5.25	14.18	9.5
ASME 16.5	1500	16	32.5	27.75	2.63	16	2.5	17.5	17.25	21.75	5.75	16.19	10.25
ASME 16.5	1500	18	36	30.5	2.88	16	2.75	19.5	19.25	23.5	6.38	18.2	10.88
ASME 16.5	1500	20	38.75	32.75	3.13	16	3	21.25	21	25.25	7	20.25	11.5
ASME 16.5	1500	24	46	39	3.63	16	3	24.25	24	30	8	24.25	13
ASME 16.5	2500	1/2	5.25	3.5	0.88	4	0.75	4.75	4.5	1.69	1.19	0.9	1.56
ASME 16.5	2500	3/4	5.5	3.75	0.88	4	0.75	5	4.75	2	1.25	1.11	1.69
ASME 16.5	2500	1	6.25	4.25	1	4	0.88	5.5	5.25	2.25	1.38	1.38	1.88
ASME 16.5	2500	1 1/4	7.25	5.12	1.13	4	1	6	5.75	2.88	1.5	1.72	2.06
ASME 16.5	2500	1 1/2	8	5.75	1.25	4	1.13	6.75	6.5	3.12	1.75	1.97	2.38
ASME 16.5	2500	2	9.25	6.75	1.13	8	1	7	6.75	3.75	2	2.46	2.75
ASME 16.5	2500	2 1/2	10.5	7.75	1.25	8	1.13	7.75	7.5	4.5	2.25	2.97	3.12
ASME 16.5	2500	3	12	9	1.38	8	1.25	8.75	8.5	5.25	2.62	3.6	3.62
ASME 16.5	2500	4	14	10.75	1.63	8	1.5	10	9.75	6.5	3	4.6	4.25
ASME 16.5	2500	5	16.5	12.75	1.88	8	1.75	11.75	11.5	8	3.62	5.69	5.12
ASME 16.5	2500	6	19	14.5	2.13	8	2	13.5	13.25	9.25	4.25	6.75	6
ASME 16.5	2500	8	21.75	17.25	2.13	12	2	15	14.75	12	5	8.75	7
ASME 16.5	2500	10	26.5	21.25	2.63	12	2.5	19.25	19	14.75	6.5	10.92	9
ASME 16.5	2500	12	30	24.38	2.88	12	2.75	21.25	21	17.38	7.25	12.92	10

TYPE	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Diameter Bolt Circle (W)	Drilling-Diameter Bolt Holes	Drilling-Number of Bolts	Drilling-Bolt Diameter	Stud Bolts (L)- Raised Face	Machine Bolts (L)- Raised Face	Diameter of Hub (X)	Min Thickness Flange (tf)	Bore- Min Lapped (B2)	Length Through Hub- Lapped (Y2)
ASME 16.5	400	1/2	95	66.5	15.88	4	12.7	-	-	38.1	14.224	22.86	22.352
ASME 16.5	400	3/4	117	82.6	19.05	4	15.88	-	-	47.752	15.748	28.194	25.4
ASME 16.5	400	1	124	88.9	19.05	4	15.88	-	-	53.848	17.526	35.052	26.924
ASME 16.5	400	1 1/4	133	98.6	19.05	4	15.88	-	-	63.5	20.574	43.688	28.448
ASME 16.5	400	1 1/2	155	114.3	22.23	4	19.05	-	-	69.85	22.352	50.038	31.75
ASME 16.5	400	2	165	127	19.05	8	15.88	-	-	84.074	25.4	62.484	36.576
ASME 16.5	400	2 1/2	190	149.4	22.23	8	19.05	-	-	100.076	28.448	75.438	41.148
ASME 16.5	400	3	210	168.1	22.23	8	19.05	-	-	117.348	31.75	91.44	45.974
ASME 16.5	400	3 1/2	229	184.2	25.4	8	22.23	-	-	133.35	35.052	104.14	49.276
ASME 16.5	400	4	254	200.2	25.4	8	22.23	140	135	146.05	35.052	117.602	50.8
ASME 16.5	400	5	279	235	25.4	8	22.23	145	135	177.8	38.1	144.53	53.85
ASME 16.5	400	6	318	269.7	25.4	12	22.23	150	145	206.248	41.15	171.45	57.15
ASME 16.5	400	8	381	330.2	28.58	12	25.4	170	165	260.35	47.75	222.25	68.33
ASME 16.5	400	10	444	387.4	31.75	16	28.58	190	185	320.548	53.85	277.37	101.6
ASME 16.5	400	12	521	450.8	34.93	16	31.75	205	195	374.65	57.15	328.17	107.95
ASME 16.5	400	14	584	514.4	34.93	20	31.75	210	205	425.45	60.45	360.17	117.35
ASME 16.5	400	16	648	571.5	38.1	20	34.93	220	215	482.6	63.5	411.23	127
ASME 16.5	400	18	711	628.6	38.1	24	34.93	230	220	533.4	66.55	462.28	136.65
ASME 16.5	400	20	775	685.8	41.28	24	38.1	240	235	587.248	69.85	514.35	146.05
ASME 16.5	400	22	838	743	44.45	24	41.28	255	250	641.35	73.15	565.15	152.4
ASME 16.5	400	24	914	812.8	47.63	24	44.45	265	260	701.548	76.2	615.95	158.75
ASME 16.5	600	1/2	95	66.5	15.88	4	12.7	75	70	38.1	14.22	22.86	22.35
ASME 16.5	600	3/4	117	82.6	19.05	4	15.88	90	85	47.752	15.75	28.19	25.4
ASME 16.5	600	1	124	88.9	19.05	4	15.88	90	85	53.848	17.53	35.05	26.92
ASME 16.5	600	1 1/4	133	98.6	19.05	4	15.88	95	90	63.5	20.57	43.69	28.45
ASME 16.5	600	1 1/2	155	114.3	22.23	4	19.05	110	100	69.85	22.35	50.04	31.75
ASME 16.5	600	2	165	127	19.05	8	15.88	110	100	84.074	25.4	62.48	36.58
ASME 16.5	600	2 1/2	190	149.4	22.23	8	19.05	120	115	100.076	28.45	75.44	41.15
ASME 16.5	600	3	210	168.1	22.23	8	19.05	125	120	117.348	31.75	91.44	45.97
ASME 16.5	600	3 1/2	229	184.2	25.4	8	22.23	140	135	133.35	35.05	104.14	49.28
ASME 16.5	600	4	273	215.9	25.4	8	22.23	145	140	152.4	38.1	116.84	53.85
ASME 16.5	600	5	330	266.7	28.58	8	25.4	165	160	188.976	44.45	144.53	60.45
ASME 16.5	600	6	356	292.1	28.58	12	25.4	170	165	222.25	47.75	171.45	66.55
ASME 16.5	600	8	419	349.2	31.75	12	28.58	190	185	273.05	55.63	222.25	76.2
ASME 16.5	600	10	508	431.8	34.93	16	31.75	215	210	342.9	63.5	277.37	111.25
ASME 16.5	600	12	559	489	34.93	20	31.75	220	215	400.05	66.55	328.17	117.35
ASME 16.5	600	14	603	527	38.1	20	34.93	235	230	431.8	69.85	360.17	127
ASME 16.5	600	16	686	603.2	41.28	20	38.1	255	250	495.3	76.2	411.23	139.7
ASME 16.5	600	18	743	654	44.45	20	41.28	275	265	546.1	82.55	462.28	152.4
ASME 16.5	600	20	813	723.9	44.45	24	41.28	285	280	609.6	88.9	514.35	165.1
ASME 16.5	600	22	870	777.7	47.63	24	44.45	305	…	666.75	95.25	565.15	174.75
ASME 16.5	600	24	940	838.2	50.8	24	47.63	330	325	717.55	101.6	615.95	184.15
ASME 16.5	900	1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/4	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	1 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	2 1/2	-	-	-	-	-	-	-	-	-	-	-
ASME 16.5	900	3	241	190.5	25.4	8	22.23	145	145	127	38.1	91.44	53.848
ASME 16.5	900	4	292	235	31.75	8	28.58	170	170	158.75	44.45	116.84	69.85
ASME 16.5	900	5	349	279.4	34.93	8	31.75	190	190	190.5	50.8	144.53	79.25
ASME 16.5	900	6	381	317.5	31.75	12	28.58	190	195	234.95	55.63	171.45	85.85
ASME 16.5	900	8	470	393.7	38.1	12	34.93	220	220	298.45	63.5	222.25	114.3
ASME 16.5	900	10	546	469.9	38.1	16	34.93	235	235	368.3	69.85	277.37	127
ASME 16.5	900	12	610	533.4	38.1	20	34.93	255	255	419.1	79.25	328.17	142.75
ASME 16.5	900	14	641	558.8	41.28	20	38.1	275	280	450.85	85.85	360.17	155.45
ASME 16.5	900	16	705	616	44.45	20	41.28	285	290	508	88.9	411.23	165.1
ASME 16.5	900	18	787	685.8	50.8	20	47.63	325	335	565.15	101.6	462.28	190.5
ASME 16.5	900	20	857	749.3	53.98	20	50.8	350	360	622.3	107.95	514.35	209.55
ASME 16.5	900	24	1041	901.7	66.68	20	63.5	440	455	749.3	139.7	615.95	266.7
ASME 16.5	1500	1/2	121	82.6	22.23	4	19.05	110	100	38.1	22.35	22.86	31.75
ASME 16.5	1500	3/4	130	88.9	22.23	4	19.05	115	110	44.45	25.4	28.19	35.05
ASME 16.5	1500	1	149	101.6	25.4	4	22.23	125	120	52.324	28.45	35.05	41.15
ASME 16.5	1500	1 1/4	159	111.1	25.4	4	22.23	125	120	63.5	28.45	43.69	41.15
ASME 16.5	1500	1 1/2	178	124	28.58	4	25.4	140	135	69.85	31.75	50.04	44.45
ASME 16.5	1500	2	216	165.1	25.4	8	22.23	145	140	104.648	38.1	62.48	57.15
ASME 16.5	1500	2 1/2	244	190.5	28.58	8	25.4	160	150	123.952	41.15	75.44	63.5
ASME 16.5	1500	3	267	203.2	28.58	8	28.58	180	170	133.35	47.75	91.44	73.15
ASME 16.5	1500	4	311	241.3	34.93	8	31.75	195	190	162.052	53.85	116.84	90.42
ASME 16.5	1500	5	375	292.1	41.28	8	38.1	250	240	196.85	73.15	144.53	104.65
ASME 16.5	1500	6	394	317.5	38.1	12	34.93	260	255	228.6	82.55	171.45	119.13
ASME 16.5	1500	8	483	393.7	44.45	12	41.28	290	285	292.1	91.95	222.25	142.75
ASME 16.5	1500	10	584	482.6	50.8	12	47.63	335	330	368.3	107.95	277.37	177.8
ASME 16.5	1500	12	673	571.5	53.98	16	50.8	375	370	450.85	123.95	328.17	218.95
ASME 16.5	1500	14	749	635	60.33	16	57.15	405	400	495.3	133.35	360.17	241.3
ASME 16.5	1500	16	826	704.8	66.68	16	63.5	445	440	552.45	146.05	411.23	260.35
ASME 16.5	1500	18	914	774.7	73.03	16	69.85	495	490	596.9	162.05	462.28	276.35
ASME 16.5	1500	20	984	831.8	79.38	16	76.2	540	535	641.35	177.8	514.35	292.1
ASME 16.5	1500	24	1168	990.6	92.08	16	76.2	615	610	762	203.2	615.95	330.2
ASME 16.5	2500	1/2	133	88.9	22.23	4	19.05	120	115	42.926	30.23	22.86	39.62
ASME 16.5	2500	3/4	140	95.2	22.23	4	19.05	125	120	50.8	31.75	28.194	42.93
ASME 16.5	2500	1	159	108	25.4	4	22.23	140	135	57.15	35.05	35.052	47.75
ASME 16.5	2500	1 1/4	184	130	28.58	4	25.4	150	145	73.152	38.1	43.688	52.32
ASME 16.5	2500	1 1/2	203	146	31.75	4	28.58	170	165	79.248	44.45	50.038	60.45
ASME 16.5	2500	2	235	171.4	28.58	8	25.4	180	170	95.25	50.8	62.484	69.85
ASME 16.5	2500	2 1/2	267	196.8	31.75	8	28.58	195	190	114.3	57.15	75.438	79.25
ASME 16.5	2500	3	305	228.6	34.93	8	31.75	220	215	133.35	66.55	91.44	91.95
ASME 16.5	2500	4	356	273	41.28	8	38.1	255	250	165.1	76.2	116.84	107.95
ASME 16.5	2500	5	419	323.8	47.63	8	44.45	300	290	203.2	91.95	144.526	130.05
ASME 16.5	2500	6	483	368.3	53.98	8	50.8	345	335	234.95	107.95	171.45	152.4
ASME 16.5	2500	8	552	438.2	53.98	12	50.8	380	375	304.8	127	222.25	177.8
ASME 16.5	2500	10	673	539.8	66.68	12	63.5	490	485	374.65	165.1	277.368	228.6
ASME 16.5	2500	12	762	619.3	73.03	12	69.85	540	535	441.452	184.15	328.168	254

Tbl. 4.F.12

Notes:

Refer to ANSI/ASME B16.5 for notes, pressures, and minimum design requirements.
Any column with "-" relate to a note in the standard or is not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are millimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Flanges per ASME B16.47 Series A Class 150-300

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (.06 in)
16.47 Series A	150	26	34.25	2.63	4.69	26.62	26.00	29.50	31.75	24	1 3/8	1 1/4	8.75
16.47 Series A	150	28	36.50	2.75	4.88	28.62	28.00	31.50	34.00	28	1 3/8	1 1/4	9.00
16.47 Series A	150	30	38.75	2.88	5.32	30.75	30.00	33.75	36.00	28	1 3/8	1 1/4	9.25
16.47 Series A	150	32	41.75	3.13	5.63	32.75	32.00	36.00	38.50	28	1 5/8	1 1/2	10.50
16.47 Series A	150	34	43.75	3.19	5.82	34.75	34.00	38.00	40.50	32	1 5/8	1 1/2	10.50
16.47 Series A	150	36	46.00	3.50	6.13	36.75	36.00	40.25	42.75	32	1 5/8	1 1/2	11.25
16.47 Series A	150	38	48.75	3.38	6.13	39.00	38.00	42.25	45.25	32	1 5/8	1 1/2	11.00
16.47 Series A	150	40	50.75	3.50	6.38	41.00	40.00	44.25	47.25	36	1 5/8	1 1/2	11.25
16.47 Series A	150	42	53.00	3.75	6.69	43.00	42.00	47.00	49.50	36	1 5/8	1 1/2	11.75
16.47 Series A	150	44	55.25	3.94	6.94	45.00	44.00	49.00	51.75	40	1 5/8	1 1/2	12.00
16.47 Series A	150	46	57.25	4.00	7.25	47.12	46.00	51.00	53.75	40	1 5/8	1 1/2	12.25
16.47 Series A	150	48	59.50	4.19	7.50	49.12	48.00	52.50	56.00	44	1 5/8	1 1/2	12.50
16.47 Series A	150	50	67.75	4.32	7.94	51.25	50.00	55.50	58.25	44	1 7/8	1 3/4	13.50
16.47 Series A	150	52	64.00	4.50	8.19	53.25	52.00	57.50	60.50	44	1 7/8	1 3/4	13.75
16.47 Series A	150	54	66.25	4.69	8.44	55.25	54.00	59.50	62.75	44	1 7/8	1 3/4	14.00
16.47 Series A	150	56	68.75	4.82	8.94	57.38	56.00	62.00	65.00	48	1 7/8	1 3/4	14.50
16.47 Series A	150	58	71.00	5.00	9.19	59.38	58.00	64.00	67.25	48	1 7/8	1 3/4	14.75
16.47 Series A	150	60	73.00	5.13	9.38	61.38	60.00	66.00	69.25	52	1 7/8	1 3/4	15.00
16.47 Series A	300	26	38.25	3.07	7.19	28.38	26.00	29.50	34.50	28	1 3/4	1 5/8	10.50
16.47 Series A	300	28	40.75	3.32	7.69	30.50	28.00	31.50	37.00	28	1 3/4	1 5/8	11.00
16.47 Series A	300	30	43.00	3.57	8.19	32.56	30.00	33.75	39.25	28	1 7/8	1 3/4	11.75
16.47 Series A	300	32	45.25	3.82	8.69	34.69	32.00	36.00	41.50	28	2	1 7/8	12.75
16.47 Series A	300	34	47.50	3.94	9.07	36.88	34.00	38.00	43.50	28	2	1 7/8	13.00
16.47 Series A	300	36	50.00	4.07	9.44	39.00	36.00	40.25	46.00	32	2 1/8	2	13.50
16.47 Series A	300	38	46.00	4.19	7.06	39.12	38.00	40.50	43.00	32	1 5/8	1 1/2	12.50
16.47 Series A	300	40	48.75	4.44	7.56	41.25	40.00	42.75	45.50	32	1 3/4	1 5/8	13.25
16.47 Series A	300	42	50.75	4.63	7.82	43.25	42.00	44.75	47.50	32	1 3/4	1 5/8	13.75
16.47 Series A	300	44	53.25	4.82	8.06	45.25	44.00	47.00	49.75	32	1 7/8	1 3/4	14.50
16.47 Series A	300	46	55.75	5.00	8.44	47.38	46.00	49.00	52.00	28	2	1 7/8	15.00
16.47 Series A	300	48	57.75	5.19	8.75	49.38	48.00	51.25	54.00	32	2	1 7/8	15.50
16.47 Series A	300	50	60.25	5.44	9.07	51.38	50.00	53.50	56.25	32	2 1/8	2	16.00
16.47 Series A	300	52	62.25	5.63	9.32	53.38	52.00	55.50	58.25	32	2 1/8	2	16.50
16.47 Series A	300	54	65.25	5.94	9.88	55.50	54.00	57.75	61.00	28	2 3/8	2 1/4	17.50
16.47 Series A	300	56	67.25	6.00	10.19	57.62	56.00	59.75	63.00	28	2 3/8	2 1/4	17.75
16.47 Series A	300	58	69.25	6.19	10.44	59.62	58.00	62.00	65.00	32	2 3/8	2 1/4	18.25
16.47 Series A	300	60	71.25	6.38	10.69	61.62	60.00	64.00	67.00	32	2 3/8	1 1/4	18.75

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange- WNF	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (1.6 mm)
16.47 Series A	150	26	870	66.8	119	676	660.4	749	806.4	24	35	31 3/4	225
16.47 Series A	150	28	927	69.8	124	727	711.2	800	863.6	28	35	31 3/4	230
16.47 Series A	150	30	984	73.2	135	781	762	857	914.4	28	35	31 3/4	235
16.47 Series A	150	32	1060	79.5	143	832	812.8	914	977.9	28	41 2/7	38	265
16.47 Series A	150	34	1111	81	148	883	863.6	965	1028.7	32	41 2/7	38	270
16.47 Series A	150	36	1168	88.9	156	933	914.4	1022	1085.8	32	41.275	38.1	285
16.47 Series A	150	38	1238	85.9	156	991	965.2	1073	1149.4	32	41 2/7	38.1	280
16.47 Series A	150	40	1289	88.9	162	1041	1016	1124	1200.2	36	41 2/7	38	285
16.47 Series A	150	42	1346	95.2	170	1092	1066.8	1194	1257.3	36	41 2/7	38	300
16.47 Series A	150	44	1403	100.1	176	1143	1117.6	1245	1314.4	40	41 2/7	38	305
16.47 Series A	150	46	1454	101.6	184	1197	1168.4	1295	1365.2	40	41 2/7	38	310
16.47 Series A	150	48	1511	106.4	191	1248	1219.2	1359	1422.4	44	41 2/7	38	320
16.47 Series A	150	50	1568	109.7	202	1302	1270	1410	1479.6	44	47.625	44.45	340
16.47 Series A	150	52	1626	114.3	208	1353	1320.8	1431	1536.7	44	47.625	44.45	350
16.47 Series A	150	54	1683	119.1	214	1403	1371.6	15111	1593.8	44	47 5/8	44 4/9	360
16.47 Series A	150	56	1746	122.4	227	1457	1422.4	1575	1651	48	47 5/8	44 4/9	365
16.47 Series A	150	58	1803	127	233	1508	1473.2	1626	1708.2	48	47 5/8	44 4/9	380
16.47 Series A	150	60	1854	130.3	238	1559	1524	1676	1759	52	47 5/8	44 4/9	380
16.47 Series A	300	26	972	78	183	721	660.4	749	876.3	28	44.45	41 2/7	270
16.47 Series A	300	28	1035	84.3	195	775	711.2	800	939.8	28	44.45	41 2/7	280
16.47 Series A	300	30	1092	90.7	208	827	762	857	997	28	47.625	44 4/9	300
16.47 Series A	300	32	1149	97	221	881	812.8	914	1054.1	28	50 4/5	47.625	320
16.47 Series A	300	34	1206	100.1	230	937	863.6	965	1104.9	28	50 4/5	47.625	330
16.47 Series A	300	36	1270	103.4	240	991	914.4	1022	1168.4	32	54	50.8	340
16.47 Series A	300	38	1168	106.4	179	994	965.2	1029	1092.2	32	41 2/7	38.1	32
16.47 Series A	300	40	1238	112.8	192	1048	1016	1086	1155.7	32	44 4/9	41.275	340
16.47 Series A	300	42	1289	117.6	199	1099	1066.8	1137	1206.5	32	44 4/9	41.275	350
16.47 Series A	300	44	1353	122.4	205	1149	1117.6	1194	1263.6	32	47 5/8	44.45	365
16.47 Series A	300	46	1416	127	214	1203	1168.4	1245	1320.8	28	50 4/5	47.625	380
16.47 Series A	300	48	1467	131.8	222	1254	1219.2	1302	1371.6	32	50 4/5	47.625	390
16.47 Series A	300	50	1530	138.2	230	1305	1270	1359	1428.8	32	54	50 4/5	410
16.47 Series A	300	52	1581	143	237	1356	1320.8	1410	1479.6	32	54	50 4/5	420
16.47 Series A	300	54	1657	150.9	251	1410	1371.6	1467	1549.4	28	60 1/3	57 1/7	450
16.47 Series A	300	56	1708	152.4	259	1464	1422.4	1518	1600.2	28	60 1/3	57 1/7	450
16.47 Series A	300	58	1759	157.2	265	1514	1473.2	1575	1651	32	60 1/3	57 1/7	465
16.47 Series A	300	60	1810	160.1	272	1565	1524	1626	1701.8	32	60 1/3	31 3/4	475

Tbl. 4.F.13

Notes:

Refer to ANSI/ASME B16.47 for notes, pressures, and minimum design requirements.
Any column with "-" is relateto a note in the reference standard or may not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are milimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Flanges per ASME B16.47 Series A Class 400-900

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (.25 in)
16.47 Series A	400	26	38.25	3.50	7.62	28.62	26.00	29.50	34.50	28	1 7/8	1 3/4	12.00
16.47 Series A	400	28	40.75	3.75	8.12	30.81	28.00	31.50	37.00	28	2	1 7/8	13.00
16.47 Series A	400	30	43.00	4.00	8.62	32.94	30.00	33.75	39.25	28	2 1/8	2	13.50
16.47 Series A	400	32	45.25	4.25	9.12	35.00	32.00	36.00	41.50	28	2 1/8	2	14.00
16.47 Series A	400	34	47.50	4.38	9.50	37.19	34.00	38.00	43.50	28	2 1/8	2	14.50
16.47 Series A	400	36	50.00	4.50	9.88	39.38	36.00	40.25	46.00	32	2 1/8	2	14.50
16.47 Series A	400	38	47.50	4.88	8.12	39.50	38.00	40.75	44.00	32	1 7/8	1 3/4	15.00
16.47 Series A	400	40	50.00	5.12	8.50	41.50	40.00	43.00	46.25	32	2	1 7/8	15.50
16.47 Series A	400	42	52.00	5.25	8.81	43.62	42.00	45.00	48.25	32	2	1 7/8	16.00
16.47 Series A	400	44	54.50	5.50	9.18	45.62	44.00	47.25	50.50	32	2 1/8	2	16.50
16.47 Series A	400	46	56.75	5.75	9.62	47.75	46.00	49.50	52.75	36	2 1/8	2	17.00
16.47 Series A	400	48	59.50	6.00	10.12	49.88	48.00	51.50	55.25	28	2 3/8	2 1/4	18.00
16.47 Series A	400	50	61.75	6.19	10.56	52.00	50.00	53.62	57.50	32	2 3/8	2 1/4	18.50
16.47 Series A	400	52	63.75	6.38	10.88	54.00	52.00	55.62	59.50	32	2 3/8	2 1/4	19.00
16.47 Series A	400	54	67.00	6.69	11.38	56.12	54.00	57.88	62.25	28	2 5/8	2 1/2	20.00
16.47 Series A	400	56	69.00	6.88	11.75	58.25	56.00	60.12	64.25	32	2 5/8	2 1/2	20.50
16.47 Series A	400	58	71.00	7.00	12.06	60.25	58.00	62.12	66.25	32	2 5/8	2 1/2	20.75
16.47 Series A	400	60	74.25	7.31	12.56	62.38	60.00	64.38	69.00	32	2 7/8	2 3/4	21.75
16.47 Series A	600	26	40.00	4.25	8.75	29.44	26.00	29.50	36.00	28	2	1 7/8	14.00
16.47 Series A	600	28	42.25	4.38	9.25	31.62	28.00	31.50	38.00	28	2 1/8	2	14.50
16.47 Series A	600	30	44.50	4.50	9.75	33.94	30.00	33.75	40.25	28	2 3/8	2	14.50
16.47 Series A	600	32	47.00	4.62	10.25	36.12	32.00	36.00	42.50	28	2 3/8	2 1/4	15.25
16.47 Series A	600	34	49.00	4.75	10.62	38.31	34.00	38.00	44.50	28	2 5/8	2 1/4	15.50
16.47 Series A	600	36	51.75	4.88	11.12	40.62	36.00	40.25	47.00	28	2 3/8	2 1/2	16.50
16.47 Series A	600	38	50.00	6.00	10.00	40.25	38.00	41.50	45.75	28	2 3/8	2 1/4	18.25
16.47 Series A	600	40	52.00	6.25	10.38	42.25	40.00	43.75	47.75	32	2 5/8	2 1/4	18.75
16.47 Series A	600	42	55.25	6.62	11.00	44.38	42.00	46.00	50.50	28	2 5/8	2 1/2	20.00
16.47 Series A	600	44	57.25	6.81	11.38	46.50	44.00	48.25	52.50	32	2 5/8	2 1/2	20.25
16.47 Series A	600	46	59.50	7.06	11.81	48.62	46.00	50.25	54.75	32	2 7/8	2 1/2	20.75
16.47 Series A	600	48	62.75	7.44	12.44	50.75	48.00	52.50	57.50	32	3 1/8	2 3/4	22.00
16.47 Series A	600	50	65.75	7.75	12.94	52.88	50.00	54.50	60.00	28	3 1/8	3	23.25
16.47 Series A	600	52	67.75	8.00	13.25	54.88	52.00	56.50	62.00	32	3 1/8	3	23.75
16.47 Series A	600	54	70.00	8.25	13.75	57.00	54.00	58.75	64.25	32	3 1/8	3	2425.00
16.47 Series A	600	56	73.00	8.56	14.25	59.12	56.00	60.75	66.75	32	3 3/8	3 1/4	25.50
16.47 Series A	600	58	75.00	8.75	14.53	61.12	58.00	63.00	68.75	32	3 3/8	3 1/4	25.75
16.47 Series A	600	60	78.50	9.19	15.31	63.38	60.00	65.25	71.75	28	3 5/8	3 1/2	27.25
16.47 Series A	900	26	42.75	5.50	11.25	30.50	26.00	29.50	37.50	20	2 7/8	2 3/4	18.25
16.47 Series A	900	28	46.00	5.62	11.75	32.75	28.00	31.50	40.25	20	3 1/8	3	19.00
16.47 Series A	900	30	48.50	5.88	12.25	35.00	30.00	33.75	42.75	20	3 1/8	3	19.50
16.47 Series A	900	32	51.75	6.25	13.00	37.25	32.00	36.00	45.50	20	3 3/8	3 1/4	20.75
16.47 Series A	900	34	55.00	6.50	13.75	39.62	34.00	38.00	48.25	20	3 5/8	3 1/2	21.75
16.47 Series A	900	36	57.50	6.75	14.25	41.88	36.00	40.25	50.75	20	3 5/8	3 1/2	22.25
16.47 Series A	900	38	57.50	7.50	13.88	42.25	38.00	43.25	50.75	20	3 5/8	3 1/2	23.75
16.47 Series A	900	40	59.50	7.75	14.31	44.38	40.00	45.75	52.75	24	3 5/8	3 1/2	24.50
16.47 Series A	900	42	61.50	8.12	14.62	46.31	42.00	47.75	54.75	24	3 5/8	3 1/2	25.00
16.47 Series A	900	44	64.88	8.44	15.38	48.62	44.00	50.00	57.75	24	3 7/8	3 3/4	26.00
16.47 Series A	900	46	68.25	8.88	16.18	50.88	46.00	52.50	60.50	24	4 1/8	4	27.50
16.47 Series A	900	48	70.25	9.19	16.50	52.88	48.00	54.50	62.50	24	4 1/8	4	28.00
16.47 Series A	900	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	60	…	…	…	…	…	…	…	…	…	…	…

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (6.44mm)
16.47 Series A	400	26	972	88.9	194	727	660.4	749	876.3	28	47 5/8	44 4/9	310
16.47 Series A	400	28	1035	95.2	206	783	711.2	800	939.8	28	50 4/5	47 5/8	330
16.47 Series A	400	30	1092	101.6	219	837	762	857	997	28	54	50 4/5	345
16.47 Series A	400	32	1149	108	232	339	812.8	914	1054.1	28	54	50 4/5	360
16.47 Series A	400	34	1206	111.3	241	945	863.6	965	1104.9	28	54	50 4/5	365
16.47 Series A	400	36	1270	114.3	251	1000	914.4	1022	1168.4	32	54	50 4/5	375
16.47 Series A	400	38	1206	124	206	1003	965.2	1035	1117.6	32	47 5/8	44 4/9	380
16.47 Series A	400	40	1270	130	216	1054	1016	1092	1174.8	32	50 4/5	47 5/8	405
16.47 Series A	400	42	1321	133.4	224	1108	1066.8	1143	1225.6	32	50 4/5	47 5/8	405
16.47 Series A	400	44	1384	139.7	233	1159	1117.6	1200	1282.7	32	54	50 4/5	425
16.47 Series A	400	46	1441	146	244	1213	1168.4	1257	1339.8	36	54	50 4/5	435
16.47 Series A	400	48	1511	152.4	257	1267	1219.2	1308	1403.4	28	60 1/3	57 1/7	460
16.47 Series A	400	50	1568	157.2	268	1321	1270	1362	1460.5	32	60 1/3	57 1/7	470
16.47 Series A	400	52	1619	162.1	276	1372	1320.8	1413	1511.3	32	60 1/3	57 1/7	480
16.47 Series A	400	54	1702	169.9	289	1425	1371.6	1470	1581.2	28	66 2/3	63 1/2	510
16.47 Series A	400	56	1753	174.8	298	1480	1422.4	1527	1632	32	66 2/3	63 1/2	520
16.47 Series A	400	58	1803	177.8	306	1530	1473.2	1578	1682.8	32	66 2/3	63 1/2	530
16.47 Series A	400	60	1886	185.7	319	1584	1524	1635	1752.6	32	73	69 6/7	560
16.47 Series A	600	26	1016	108	222	748	660.4	749	914.4	28	50 4/5	47 5/8	355
16.47 Series A	600	28	1073	111.3	235	803	711.2	800	965.2	28	54	50 4/5	365
16.47 Series A	600	30	1130	114.3	248	862	762	857	1022.4	28	60 1/3	50 4/5	375
16.47 Series A	600	32	1194	117.3	260	917	812.8	914	1079.5	28	60 1/3	57 1/7	390
16.47 Series A	600	34	1245	120.6	270	973	863.6	965	1130.3	28	66 2/3	57 1/7	400
16.47 Series A	600	36	1314	124	282	1032	914.4	1022	1193.8	28	60 1/3	63 1/2	415
16.47 Series A	600	38	1270	152.4	254	1022	965.2	1054	1162	28	60 1/3	57 1/7	465
16.47 Series A	600	40	1321	158.8	264	1073	1016	1111	1212.8	32	66 2/3	57 1/7	480
16.47 Series A	600	42	1403	168.1	279	1127	1066.8	1168	1282.7	28	66 2/3	63 1/2	510
16.47 Series A	600	44	1454	173	289	1181	1117.6	1226	1333.5	32	66 2/3	63 1/2	520
16.47 Series A	600	46	1511	179.3	300	1235	1168.4	1276	1390.6	32	73	63 1/2	530
16.47 Series A	600	48	1594	189	316	1289	1219.2	1334	1460.5	32	79 3/8	69 6/7	565
16.47 Series A	600	50	1670	196.8	329	1343	1270	1384	1524	28	79 3/8	76 1/5	595
16.47 Series A	600	52	1721	203.2	337	1394	1320.8	1435	1574.8	32	79 3/8	76 1/5	605
16.47 Series A	600	54	1778	209.6	349	1448	1371.6	1492	1632	32	79 3/8	76 1/5	620
16.47 Series A	600	56	1854	217.4	362	1502	1422.4	1543	1695.4	32	85 5/7	82 5/9	645
16.47 Series A	600	58	1905	222.2	370	1553	1473.2	1600	1746.2	32	85 5/7	82 5/9	655
16.47 Series A	600	60	1994	233.4	389	1610	1524	1657	1822.4	28	92	88 8/9	690
16.47 Series A	900	26	1086	139.7	286	775	660.4	749	952.5	20	73	69 6/7	465
16.47 Series A	900	28	1168	142.7	298	832	711.2	800	1022.4	20	79 3/8	76 1/5	485
16.47 Series A	900	30	1232	129.4	311	889	762	857	1085.8	20	79 3/8	76 1/5	495
16.47 Series A	900	32	1314	158.8	330	946	812.8	914	1155.7	20	85 5/7	82 5/9	530
16.47 Series A	900	34	1397	165.1	349	1006	863.6	965	1225.6	20	92	88 8/9	555
16.47 Series A	900	36	1460	171.4	362	1064	914.4	1022	1289	20	92	88 8/9	565
16.47 Series A	900	38	1460	190.5	353	1073	965.2	1099	1289	20	92	88 8/9	605
16.47 Series A	900	40	1511	196.8	363	1127	1016	1162	1339.8	24	92	88 8/9	620
16.47 Series A	900	42	1562	206.2	371	1176	1066.8	1213	1390.6	24	92	88 8/9	635
16.47 Series A	900	44	1648	214.4	391	1235	1117.6	1270	1463.5	24	98 3/7	95 1/4	665
16.47 Series A	900	46	1734	225.6	411	1292	1168.4	1334	1536.7	24	104 7/9	101 3/5	7000
16.47 Series A	900	48	1784	233.4	419	1343	1219.2	1384	1587.5	24	104 7/9	101 3/5	715
16.47 Series A	900	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series A	900	60	…	…	…	…	…	…	…	…	…	…	…

Tbl. 4.F.14

Notes:

Refer to ANSI/ASME B16.47 for notes, pressures, and minimum design requirements.
Any column with "-" is relateto a note in the reference standard or may not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are milimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Flanges per ASME B16.47 Series B Class 75-300

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A or H)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (.06 in)
16.47 Series B	75	26	30.00	1.25	2.25	26.62	26.06	27.75	28.50	36	3/4	5/8	4.50
16.47 Series B	75	28	32.00	1.25	2.38	28.62	28.06	29.75	30.50	40	3/4	5/8	4.50
16.47 Series B	75	30	34.00	1.25	2.50	30.62	30.06	31.75	32.50	44	3/4	5/8	4.75
16.47 Series B	75	32	36.00	1.32	2.69	32.62	32.06	33.75	34.50	48	3/4	5/8	4.75
16.47 Series B	75	34	38.00	1.32	2.82	34.62	34.06	35.75	36.50	52	3/4	5/8	4.75
16.47 Series B	75	36	40.69	1.38	3.32	36.81	36.06	38.00	39.06	40	7/8	3/4	5.00
16.47 Series B	75	38	42.69	1.44	3.44	38.81	38.06	40.00	41.06	40	7/8	3/4	5.25
16.47 Series B	75	40	44.69	1.44	3.57	40.81	40.06	42.00	43.06	44	7/8	3/4	5.25
16.47 Series B	75	42	46.69	1.50	3.69	42.81	42.06	44.00	45.06	48	7/8	3/4	5.25
16.47 Series B	75	44	49.25	1.63	4.07	44.88	44.06	46.25	47.38	36	1	7/8	5.75
16.47 Series B	75	46	51.25	1.69	4.19	46.88	46.06	48.25	49.38	40	1	7/8	6.00
16.47 Series B	75	48	53.25	1.75	4.32	48.88	48.06	50.25	51.38	44	1	7/8	6.00
16.47 Series B	75	50	55.25	1.82	4.50	50.94	50.06	52.25	53.38	44	1	7/8	6.25
16.47 Series B	75	52	57.38	1.82	4.69	52.94	52.06	54.25	55.50	48	1	7/8	6.25
16.47 Series B	75	54	59.38	1.88	4.88	55.00	54.06	56.25	57.50	48	1	7/8	6.25
16.47 Series B	75	56	62.00	1.94	5.25	57.12	56.06	58.50	59.88	40	1 1/8	1	6.75
16.47 Series B	75	58	64.00	2.00	5.38	59.12	58.06	60.50	61.88	44	1 1/8	1	7.00
16.47 Series B	75	60	66.00	2.13	5.63	61.12	60.06	62.50	63.88	44	1 1/8	1	7.25
16.47 Series B	150	26	30.94	1.57	3.44	26.94	26.06	28.00	29.31	36	7/8	3/4	5.50
16.47 Series B	150	28	32.94	1.69	3.69	28.94	28.06	30.00	31.31	40	7/8	3/4	5.75
16.47 Series B	150	30	34.94	1.69	3.88	31.00	30.06	32.00	33.31	44	7/8	3/4	5.75
16.47 Series B	150	32	37.06	1.75	4.19	33.06	32.06	34.00	35.44	48	7/8	3/4	5.75
16.47 Series B	150	34	39.56	1.88	4.28	35.12	34.06	36.25	37.69	40	1	7/8	6.25
16.47 Series B	150	36	41.62	2.00	4.57	37.19	36.06	38.25	39.75	44	1	7/8	6.50
16.47 Series B	150	38	44.25	2.07	4.82	39.25	38.12	40.25	42.12	40	1 1/8	1	7.25
16.47 Series B	150	40	46.25	2.13	5.00	41.31	40.12	42.50	44.12	44	1 1/8	1	7.25
16.47 Series B	150	42	48.25	2.25	5.19	43.38	42.12	44.50	46.12	48	1 1/8	1	7.50
16.47 Series B	150	44	50.25	2.32	5.32	445.38	44.12	46.50	48.12	52	1 1/8	1	7.75
16.47 Series B	150	46	52.81	2.38	5.63	47.44	46.12	48.62	50.56	40	1 1/4	1 1/8	8.00
16.47 Series B	150	48	54.81	2.50	5.82	49.50	48.12	50.75	52.56	44	1 1/4	1 1/8	8.25
16.47 Series B	150	50	56.81	2.63	6.00	51.50	50.12	52.75	54.56	48	1 1/4	1 1/8	8.50
16.47 Series B	150	52	58.81	2.69	6.13	53.56	52.12	54.75	56.56	52	1 1/4	1 1/8	8.75
16.47 Series B	150	54	61.00	2.75	6.32	55.62	54.12	56.75	58.75	56	1 1/4	1 1/8	8.75
16.47 Series B	150	56	63.00	2.82	6.50	57.62	56.12	58.75	60.75	60	1 1/4	1 1/8	9.00
16.47 Series B	150	58	65.94	2.88	6.82	59.69	58.12	60.75	63.44	48	1 3/8	1 1/4	9.25
16.47 Series B	150	60	67.94	2.94	7.00	61.81	60.12	63.00	65.44	52	1 3/8	1 1/4	9.50
16.47 Series B	300	26	34.12	3.44	5.63	27.62	26.19	29.00	31.62	32	1 3/8	1 1/4	10.50
16.47 Series B	300	28	36.25	3.44	5.81	29.75	28.19	31.00	33.75	36	1 3/8	1 1/4	10.50
16.47 Series B	300	30	39.00	3.63	6.16	32.00	30.25	33.25	36.25	36	1 1/2	1 3/8	11.25
16.47 Series B	300	32	41.50	4.00	6.56	34.00	32.25	35.50	38.50	32	1 5/8	1 1/2	12.25
16.47 Series B	300	34	43.62	4.00	6.75	36.12	34.25	37.50	40.62	36	1 5/8	1 1/2	12.25
16.47 Series B	300	36	46.12	4.00	7.06	38.00	36.25	39.75	42.88	32	1 3/4	1 5/8	12.50
16.47 Series B	300	38	48.12	4.31	7.50	40.00	38.25	41.75	44.88	36	1 3/4	1 5/8	13.00
16.47 Series B	300	40	50.12	4.50	7.75	42.00	40.25	43.88	46.88	40	1 3/4	1 5/8	13.50
16.47 Series B	300	42	52.50	4.63	8.00	44.00	42.31	46.00	49.00	36	1 7/8	1 3/4	14.00
16.47 Series B	300	44	54.50	4.94	8.38	46.19	44.31	48.00	51.00	40	1 7/8	1 3/4	14.50
16.47 Series B	300	46	57.50	5.00	8.69	48.38	46.31	50.00	53.75	36	2	1 7/8	15.00
16.47 Series B	300	48	59.50	5.00	8.75	50.31	48.31	52.25	55.75	40	2	1 7/8	15.00
16.47 Series B	300	50	61.50	5.38	9.19	52.38	50.31	54.25	57.75	44	2	1 7/8	15.75
16.47 Series B	300	52	63.50	5.56	9.50	54.44	52.31	56.25	59.75	48	2	1 7/8	16.00
16.47 Series B	300	54	65.88	5.32	9.38	56.50	54.31	58.25	62.12	48	2	1 7/8	15.75
16.47 Series B	300	56	69.50	6.00	10.50	58.81	56.31	60.50	65.00	36	2 3/8	2 1/4	17.75
16.47 Series B	300	58	71.94	6.00	10.75	60.94	58.31	62.75	67.44	40	2 3/8	2 1/4	17.75
16.47 Series B	300	60	73.94	5.88	10.63	62.94	60.31	65.00	69.44	40	2 3/8	2 1/4	17.50

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (1.6 mm)
16.47 Series B	75	26	760.00	31.80	57.00	676.00	661.90	705.00	723.90	36	15 7/8	114 2/7	115.00
16.47 Series B	75	28	813.00	31.80	60.00	727.00	712.70	756.00	774.70	40	15 7/8	114 2/7	115.00
16.47 Series B	75	30	864.00	31.80	64.00	778.00	763.50	806.00	825.50	44	15 7/8	120 2/3	115.00
16.47 Series B	75	32	914.00	33.50	68.00	829.00	814.30	857.00	876.30	48	15 7/8	120 2/3	120.00
16.47 Series B	75	34	965.00	33.50	72.00	879.00	865.10	908.00	927.10	52	15 7/8	120 2/3	120.00
16.47 Series B	75	36	1034.00	35.10	84.00	935.00	915.90	965.00	992.10	40	19	127	130.00
16.47 Series B	75	38	1084.00	36.60	87.00	986.00	966.70	1016.00	1042.90	40	19	133 1/3	130.00
16.47 Series B	75	40	1135.00	36.60	91.00	1037.00	1017.50	1067.00	1093.70	44	19	133 1/3	130.00
16.47 Series B	75	42	1186.00	38.10	94.00	1087.00	1068.30	1118.00	1144.50	48	19	133 1/3	135.00
16.47 Series B	75	44	1251.00	41.40	103.00	1140.00	1119.10	1175.00	1203.50	36	22 2/9	146	150.00
16.47 Series B	75	46	1302.00	42.90	106.00	1191.00	1169.90	1226.00	1254.30	40	22 2/9	152 2/5	150.00
16.47 Series B	75	48	1353.00	44.60	110.00	1242.00	1220.70	1276.00	1305.10	44	22 2/9	152 2/5	160.00
16.47 Series B	75	50	1403.00	46.20	114.00	1294.00	1271.50	1327.00	1355.90	44	22 2/9	158 3/4	160.00
16.47 Series B	75	52	1457.00	46.20	119.00	1345.00	1322.30	1378.00	1409.70	48	22 2/9	158 3/4	160.00
16.47 Series B	75	54	1508.00	47.80	124.00	1397.00	1373.10	1429.00	1460.50	48	22 2/9	158 3/4	160.00
16.47 Series B	75	56	1575.00	49.30	133.00	1451.00	1423.90	1486.00	1521.00	40	25 2/5	171 4/9	170.00
16.47 Series B	75	58	1626.00	50.80	137.00	1502.00	1474.70	1537.00	1571.80	44	25 2/5	177 4/5	180.00
16.47 Series B	75	60	1676.00	54.10	143.00	1553.00	1525.50	1588.00	1622.60	44	25 2/5	184 1/7	185.00
16.47 Series B	150	26	786.00	39.90	87.00	683.00	661.90	711.00	744.50	36	19	139 2/3	140.00
16.47 Series B	150	28	837.00	42.90	94.00	735.00	712.70	762.00	795.30	40	19	146	145.00
16.47 Series B	150	30	887.00	42.90	98.00	787.00	763.50	813.00	846.10	44	19	146	145.00
16.47 Series B	150	32	941.00	44.40	106.00	840.00	814.30	864.00	900.20	48	19	146	150.00
16.47 Series B	150	34	1005.00	47.80	109.00	892.00	865.10	921.00	957.30	40	22 2/9	158 3/4	165.00
16.47 Series B	150	36	1057.00	50.80	116.00	945.00	915.90	972.00	1009.60	44	22 2/9	165	165.00
16.47 Series B	150	38	1124.00	52.60	122.00	997.00	968.20	1022.00	1069.80	40	25 2/5	184 1/7	185.00
16.47 Series B	150	40	1175.00	54.10	127.00	1049.00	1019.00	1080.00	1120.60	44	25 2/5	184 1/7	185.00
16.47 Series B	150	42	1226.00	57.20	132.00	1102.00	1069.80	1130.00	1171.40	48	25 2/5	190 1/2	190.00
16.47 Series B	150	44	1276.00	58.90	135.00	1153.00	1120.60	1181.00	1222.20	52	25 2/5	196 6/7	195.00
16.47 Series B	150	46	1341.00	60.50	143.00	1205.00	1171.40	1235.00	1284.20	40	28 4/7	203 1/5	205.00
16.47 Series B	150	48	1392.00	63.50	148.00	1257.00	1222.20	1289.00	1335.00	44	28 4/7	209 5/9	210.00
16.47 Series B	150	50	1443.00	66.80	152.00	1308.00	1273.00	1340.00	1385.80	48	28 4/7	215 8/9	215.00
16.47 Series B	150	52	1494.00	68.30	156.00	1360.00	1323.80	1391.00	1436.60	52	28 4/7	222 1/4	220.00
16.47 Series B	150	54	1549.00	69.80	161.00	1413.00	1374.60	1441.00	1492.20	56	28 4/7	222 1/4	225.00
16.47 Series B	150	56	1600.00	71.60	165.00	1465.00	1425.40	1492.00	1543.00	60	28 4/7	228 3/5	225.00
16.47 Series B	150	58	1675.00	73.20	173.00	1516.00	1476.20	1543.00	1611.40	48	31 3/4	235	235.00
16.47 Series B	150	60	1726.00	74.70	178.00	1570.00	1527.00	1600.00	1662.20	52	31 3/4	241 2/7	240.00
16.47 Series B	300	26	867.00	87.40	143.00	702.00	665.20	737.00	803.10	32	31 3/4	266 2/3	270.00
16.47 Series B	300	28	921.00	87.40	148.00	756.00	716.00	787.00	857.20	36	31 3/4	266 2/3	270.00
16.47 Series B	300	30	991.00	92.20	156.00	813.00	768.40	845.00	920.80	36	35	285 3/4	285.00
16.47 Series B	300	32	1054.00	101.60	167.00	864.00	819.20	902.00	977.90	32	38	311 1/7	310.00
16.47 Series B	300	34	1108.00	101.60	171.00	917.00	870.00	952.00	1031.70	36	38	311 1/7	310.00
16.47 Series B	300	36	1171.00	101.60	179.00	965.00	920.80	1010.00	1089.20	32	41 2/7	317 1/2	320.00
16.47 Series B	300	38	1222.00	109.50	190.00	1016.00	971.60	1060.00	1140.00	36	41 2/7	330 1/5	335.00
16.47 Series B	300	40	1273.00	114.30	197.00	1067.00	1022.40	1115.00	1190.80	40	41 2/7	342 8/9	345.00
16.47 Series B	300	42	1334.00	117.60	203.00	1118.00	1074.70	1168.00	1244.60	36	44 4/9	355 3/5	355.00
16.47 Series B	300	44	1384.00	125.50	213.00	1173.00	1125.50	1219.00	1295.40	40	44 4/9	368 2/7	370.00
16.47 Series B	300	46	1460.00	127.00	221.00	1229.00	1176.30	1270.00	1365.20	36	47 5/8	381	380.00
16.47 Series B	300	48	1511.00	127.00	222.00	1278.00	1227.10	1327.00	1416.00	40	47 5/8	381	380.00
16.47 Series B	300	50	1562.00	136.70	233.00	1330.00	1277.90	1378.00	1466.80	44	47 5/8	400	400.00
16.47 Series B	300	52	1613.00	141.20	241.00	1383.00	1328.70	1429.00	1517.60	48	47 5/8	406 2/5	410.00
16.47 Series B	300	54	1673.00	135.10	238.00	1435.00	1379.50	1480.00	1577.80	48	47 5/8	400	400.00
16.47 Series B	300	56	1765.00	152.40	267.00	1494.00	14300.30	1537.00	1651.00	36	57 1/7	450 6/7	450.00
16.47 Series B	300	58	1827.00	152.40	273.00	1548.00	1481.10	1594.00	1713.00	40	57 1/7	450 6/7	450.00
16.47 Series B	300	60	1878.00	149.40	270.00	1599.00	1531.90	1651.00	1763.80	40	57 1/7	444 1/2	450.00

Tbl. 4.F.15

Notes:

Refer to ANSI/ASME B16.47 for notes, pressures, and minimum design requirements.
Any column with "-" is relateto a note in the reference standard or may not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are milimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Flanges per ASME B16.47 Series B Class 400-900

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A or H)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (.25 in)
16.47 Series B	400	26	33.50	3.50	5.88	27.12	26.00	28.00	30.75	28	1 1/2	1 3/8	14.25
16.47 Series B	400	28	36.00	3.75	6.25	29.12	28.00	30.00	33.00	24	1 5/8	1 1/2	14.75
16.47 Series B	400	30	38.25	4.00	6.69	31.25	30.00	32.25	35.25	28	1 5/8	1 1/2	15.50
16.47 Series B	400	32	40.75	4.25	7.06	33.25	32.00	34.38	37.25	28	1 3/4	1 5/8	16.25
16.47 Series B	400	34	42.75	4.38	7.38	35.38	34.00	36.50	39.50	32	1 3/4	1 5/8	17.25
16.47 Series B	400	36	45.50	4.69	7.88	37.50	36.00	38.62	42.00	28	1 7/8	1 3/4	18.00
16.47 Series B	400	38	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	40	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	42	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	44	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	46	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	48	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	60	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	26	35.00	4.38	7.12	27.50	26.00	28.62	31.75	28	1 3/4	1 5/8	14.25
16.47 Series B	600	28	37.50	4.56	7.50	29.62	28.00	30.88	34.00	28	1 7/8	1 3/4	14.75
16.47 Series B	600	30	40.25	4.94	8.06	31.75	30.00	33.12	36.50	28	2	1 7/8	15.50
16.47 Series B	600	32	42.75	5.12	8.50	33.88	32.00	35.25	38.75	28	2 1/8	2	16.25
16.47 Series B	600	34	45.75	5.56	9.19	36.00	34.00	37.50	41.50	24	2 3/8	2 1/4	17.25
16.47 Series B	600	36	47.75	5.75	9.56	38.12	36.00	39.75	43.50	28	2 3/8	2 1/4	18.00
16.47 Series B	600	38	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	40	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	42	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	44	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	46	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	48	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	60	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	26	40.25	5.31	10.19	29.25	26.00	30.00	35.50	20	2 5/8	2 1/2	17.75
16.47 Series B	900	28	43.50	5.81	10.88	31.38	28.00	32.25	38.25	20	2 7/8	2 3/4	19.25
16.47 Series B	900	30	46.50	6.12	11.38	33.50	30.00	34.50	40.75	20	3 1/8	3	20.00
16.47 Series B	900	32	48.75	6.31	11.94	35.75	32.00	36.50	43.00	20	3 1/8	3	20.75
16.47 Series B	900	34	51.75	6.75	12.56	37.88	34.00	39.00	45.50	20	3 3/8	3 1/4	22.25
16.47 Series B	900	36	53.00	6.81	12.81	40.00	36.00	40.50	47.25	24	3 1/8	3	22.50
16.47 Series B	900	38	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	40	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	42	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	44	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	46	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	48	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	60	…	…	…	…	…	…	…	…	…	…	…

ASME	Flange Class	Nominal Pipe Size (NPS)	Outside Diameter Flange (O)	Min Thickness Flange (T)	Length Through Hub (Y)	Diameter of Hub (X)	Hub Diameter Top (A)	Raised Face Diameter (R)	Drilling-Daimeter Bolt Circle	Drilling- # Bolt Holes	Drilling- Diameter Bolt Hole	Diameter of Bolt	Length of Bolts- Stud Bolt Raised Face (6.44 mm)
16.47 Series B	400	26	851.00	88.90	149.00	689.00	660.40	711.00	781.00	28	38	35	290.00
16.47 Series B	400	28	914.00	95.20	159.00	740.00	711.20	762.00	838.20	24	41 2/7	38	310.00
16.47 Series B	400	30	972.00	101.60	170.00	794.00	768.00	819.00	895.40	28	41 2/7	38	320.00
16.47 Series B	400	32	1035.00	108.00	179.00	845.00	812.80	873.00	952.50	28	44 4/9	41 2/7	345.00
16.47 Series B	400	34	1086.00	111.30	187.00	899.00	863.60	927.00	1003.30	32	44 4/9	41 2/7	345.00
16.47 Series B	400	36	1156.00	119.10	200.00	952.00	914.40	981.00	1066.80	28	47 5/8	44 4/9	370.00
16.47 Series B	400	38	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	40	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	42	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	44	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	46	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	48	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	400	60	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	26	889.00	111.30	181.00	698.00	660.40	727.00	806.40	28	44 4/9	41 2/7	360.00
16.47 Series B	600	28	952.00	115.80	190.00	752.00	711.20	784.00	863.60	28	47 5/8	44 4/9	375.00
16.47 Series B	600	30	1022.00	125.50	205.00	806.00	762.00	841.00	927.10	28	50.8	47 5/8	395.00
16.47 Series B	600	32	1086.00	130.00	216.00	861.00	812.80	895.00	984.20	28	54	50.8	415.00
16.47 Series B	600	34	1162.00	141.20	233.00	914.00	863.60	952.00	1054.10	24	60 1/3	57 1/7	440.00
16.47 Series B	600	36	1213.00	146.00	243.00	968.00	914.40	1010.00	1104.90	28	60 1/3	57 1/7	460.00
16.47 Series B	600	38	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	40	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	42	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	44	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	46	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	48	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	600	60	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	26	1022.00	134.90	259.00	743.00	660.40	762.00	901.70	20	66 2/3	63 1/2	450.00
16.47 Series B	900	28	1105.00	147.60	276.00	797.00	711.20	819.00	971.60	20	73	69 6/7	495.00
16.47 Series B	900	30	1181.00	155.40	289.00	851.00	762.00	876.00	1035.00	20	79 3/8	76.2	510.00
16.47 Series B	900	32	1238.00	160.30	303.00	908.00	812.80	927.00	1092.20	20	79 3/8	76.2	530.00
16.47 Series B	900	34	1314.00	171.40	319.00	962.00	863.60	991.00	1155.70	20	85 5/7	82 5/9	565.00
16.47 Series B	900	36	1346.00	173.00	325.00	1016.00	914.40	1029.00	1200.20	24	79 3/8	76.2	570.00
16.47 Series B	900	38	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	40	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	42	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	44	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	46	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	48	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	50	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	52	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	54	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	56	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	58	…	…	…	…	…	…	…	…	…	…	…
16.47 Series B	900	60	…	…	…	…	…	…	…	…	…	…	…

Tbl. 4.F.16

Notes:

Refer to ANSI/ASME B16.47 for notes, pressures, and minimum design requirements.
Any column with "-" is relateto a note in the reference standard or may not be covered in the standard.
Data columns from the reference standard may have been omitted.
US units are inches, Metric Units are milimeters.
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points).
Hex bolts are measured from under the head to the top of the bolt.

Last updated on April 19th, 2024

Steel Pipe Flange Dimensions

Flanges per AWWA C207 (Class B, D, E, F)

Flanges per AWWA C207 (Class B, D, E, F)

Notes:

Flanges per ASME B16.1 (Class 25, 125, 250)

Flanges per ASME B16.1 (Class 25, 125, 250)

Notes:

Flanges per ASME B16.5 (Class 150, 300)

Threaded

Threaded Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

Slip-On Welding

Slip-On Welding Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

Socket Welding (NPS 1/2 to 3 Only)

Socket Welding (NPS 1/2 to 3 Only) Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

Welding Neck

Welding Neck Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

Lapped

Lapped Steel Pipe Flanges per ASME B16.5 (Class 150, 300)

Notes:

Flanges per ASME B16.5 (Class 400, 600, 900, 1500, 2500)

Threaded

Threaded Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

Slip-On Welding

Slip-On Welding Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

Socket Welding (NPS 1/2 to 3 Only)

Socket Welding (NPS 1/2 to 3 Only) Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

Welding Neck

Welding Neck Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

Lapped

Lapped Steel Pipe Flanges per ASME B16.5 (Class 400-2500)

Notes:

Flanges per ASME B16.47 Series A Class 150-300

Flanges per ASME B16.47 Series A Class 150-300

Notes:

Flanges per ASME B16.47 Series A Class 400-900

Flanges per ASME B16.47 Series A Class 400-900

Notes:

Flanges per ASME B16.47 Series B Class 75-300

Flanges per ASME B16.47 Series B Class 75-300

Notes:

Flanges per ASME B16.47 Series B Class 400-900

Flanges per ASME B16.47 Series B Class 400-900

Notes:

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