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Inch Dimensions Large Bore Flanges Type B as per ASME B16.47

Large Diameter Flange Dimensions Type B Featured

150# | 300# | 400# | 600# | 900#

150# Large Bore Flanges Type A Dimensions as per ASME B16.47

150# Flange Body Dimensions

Large Diameter Flange Type B Dimensions Header

NPS	O Flange OD	tf : Weld Nexk Flange Thickness	tf : Blind Flange Thickness	Y Hub Length	X Hub Dia.	A Top Hub Dia.	R Raised Face Dia.	r1 Fillet Radius
26	30.94	1.57	1.69	3.44	26.94	26.06	28.00	0.38
28	32.94	1.69	1.82	3.69	28.94	28.06	30.00	0.38
30	34.94	1.69	1.94	3.88	31.00	30.06	32.00	0.38
32	37.06	1.75	2.07	4.19	33.06	32.06	34.00	0.38
34	39.56	1.88	2.19	4.28	35.12	34.06	36.25	0.38
36	41.62	2.00	2.25	4.57	37.19	36.06	38.25	0.38
38	44.25	2.07	2.44	4.82	39.25	38.12	40.25	0.38
40	46.25	2.13	2.57	5.00	41.31	40.12	42.50	0.38
42	48.25	2.25	2.63	5.19	43.38	42.12	44.50	0.44
44	50.25	2.32	2.75	5.32	45.38	44.12	46.50	0.44
46	52.81	2.38	2.88	5.63	47.44	46.12	48.62	0.44
48	54.81	2.50	3.00	5.82	48.50	48.12	50.75	0.44
50	56.81	2.63	3.13	6.00	51.50	50.12	52.75	0.44
52	58.81	2.69	3.25	6.13	53.56	52.12	54.75	0.44
54	61.00	2.75	3.38	6.32	55.62	54.12	56.75	0.44
56	63.00	2.82	3.50	6.50	57.69	56.12	58.75	0.56
58	65.94	2.88	3.62	6.82	59.69	58.12	60.75	0.56
60	67.94	2.94	3.75	7.00	61.81	60.12	63.00	0.56

150# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt
26	29.31	7/8″	36	3/4″
28	31.31	7/8″	40	3/4″
30	33.31	7/8″	44	3/4″
32	35.44	7/8″	48	3/4″
34	37.69	1″	40	7/8″
36	39.75	1″	44	7/8″
38	42.12	1-1/8″	40	1″
40	44.12	1-1/8″	44	1″
42	46.12	1-1/8″	48	1″
44	48.12	1-1/8″	52	1″
46	50.56	1-1/4″	40	1-1/8″
48	52.56	1-1/4″	44	1-1/8″
50	54.56	1-1/4″	48	1-1/8″
52	56.56	1-1/4″	52	1-1/8″
54	58.75	1-1/4″	56	1-1/8″
56	60.75	1-1/4″	60	1-1/8″
58	63.44	1-3/8″	48	1-1/4″
60	65.44	1-3/8″	52	1-1/4″

150# | 300# | 400# | 600# | 900#

300# Large Bore Flanges Type A Dimensions as per ASME B16.47

300# Flange Body Dimensions

Large Diameter Flange Type B Dimensions Header

NPS	O Flange OD	tf : Weld Nexk Flange Thickness	tf : Blind Flange Thickness	Y Hub Length	X Hub Dia.	A Top Hub Dia.	R Raised Face Dia.	r1 Fillet Radius
26	34.12	3.44	3.44	5.63	27.62	26.19	29.00	0.56
28	36.25	3.44	3.44	5.81	29.75	28.19	31.00	0.56
30	39.00	3.63	3.63	6.16	32.00	30.25	33.25	0.56
32	41.50	4.00	4.00	6.56	34.00	32.25	35.50	0.62
34	43.62	4.00	4.00	6.75	36.12	34.25	37.50	0.62
36	46.12	4.00	4.00	7.06	38.00	36.25	39.75	0.62
38	48.12	4.31	4.31	7.50	40.00	38.25	41.75	0.62
40	50.12	4.50	4.50	7.75	42.00	40.25	43.88	0.62
42	52.50	4.63	4.63	8.00	44.00	42.31	46.00	0.62
44	54.50	4.94	4.94	8.38	46.19	44.31	48.00	0.62
46	57.50	5.00	5.06	8.69	48.38	46.31	50.00	0.62
48	59.50	5.00	5.25	8.75	50.31	48.31	52.25	0.62
50	61.50	5.38	5.44	9.19	52.38	50.31	54.25	0.62
52	63.50	5.56	5.61	9.50	54.44	52.31	56.25	0.62
54	65.88	5.32	5.81	9.38	56.50	54.31	58.25	0.62
56	69.50	6.00	6.12	10.50	58.81	56.31	60.50	0.69
58	71.94	6.00	6.31	10.75	60.94	58.31	62.75	0.69
60	73.94	5.88	6.50	10.63	62.94	60.31	65.00	0.69

300# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt
26	31.62	1-3/8″	32	1-1/4″
28	33.75	1-3/8″	36	1-1/4″
30	36.25	1-1/2″	36	1-3/8″
32	38.50	1-5/8″	32	1-1/2″
34	40.62	1-5/8″	36	1-1/2″
36	42.88	1-3/4″	32	1-5/8″
38	44.88	1-3/4″	36	1-5/8″
40	46.88	1-3/4″	40	1-5/8″
42	49.00	1-7/8″	36	1-3/4″
44	51.00	1-7/8″	40	1-3/4″
46	53.75	2″	36	1-7/8″
48	55.75	2″	40	1-7/8″
50	57.75	2″	44	1-7/8″
52	59.75	2″	48	1-7/8″
54	62.12	2″	48	1-7/8″
56	65.00	2-3/8″	36	2-1/4″
58	67.44	2-3/8″	40	2-1/4″
60	69.44	2-3/8″	40	2-1/4″

150# | 300# | 400# | 600# | 900#

400# Large Bore Flanges Type A Dimensions as per ASME B16.47

400# Flange Body Dimensions

Large Diameter Flange Type B Dimensions Header

NPS	O Flange OD	tf : Weld Nexk Flange Thickness	tf : Blind Flange Thickness	Y Hub Length	X Hub Dia.	A Top Hub Dia.	R Raised Face Dia.	r1 Fillet Radius
26	33.50	3.50	3.50	5.88	27.12	26.00	28.00	0.44
28	36.00	3.75	3.75	6.25	29.12	28.00	30.00	0.50
30	38.25	4.00	4.00	6.69	31.25	30.00	32.25	0.50
32	40.75	4.25	4.25	7.06	33.25	32.00	34.38	0.50
34	42.75	4.38	4.38	7.38	35.38	34.00	36.50	0.56
36	45.50	4.69	4.69	7.88	37.50	36.00	38.62	0.56

400# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt
26	30.75	1-1/2″	28	1-3/8″
28	33.00	1-5/8″	24	1-1/2″
30	35.25	1-5/8″	28	1-1/2″
32	37.50	1-3/4″	28	1-5/8″
34	39.50	1-3/4″	32	1-5/8″
36	42.00	1-7/8″	28	1-3/4″

150# | 300# | 400# | 600# | 900#

600# Large Bore Flanges Type A Dimensions as per ASME B16.47

600# Flange Body Dimensions

Large Diameter Flange Type B Dimensions Header

NPS	O Flange OD	tf : Weld Nexk Flange Thickness	tf : Blind Flange Thickness	Y Hub Length	X Hub Dia.	A Top Hub Dia.	R Raised Face Dia.	r1 Fillet Radius
26	35.00	4.38	4.38	7.12	27.50	26.00	28.62	0.50
28	37.50	4.56	4.56	7.50	29.62	28.00	30.88	0.50
30	40.25	4.94	5.00	8.06	31.75	30.00	33.12	0.50
32	42.75	5.12	5.31	8.50	33.88	32.00	35.25	0.50
34	45.75	5.56	5.68	9.19	36.00	34.00	37.50	0.56
36	47.75	5.75	5.94	9.56	38.12	36.00	39.75	0.56

600# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt
26	31.75	1-3/4″	28	1-5/8″
28	34.00	1-7/8″	28	1-3/4″
30	36.50	2″	28	1-7/8″
32	38.75	2-1/8″	28	2″
34	41.50	2-3/8″	24	2-1/4″
36	43.50	2-3/8″	28	2-1/4″

150# | 300# | 400# | 600# | 900#

900# Large Bore Flanges Type A Dimensions as per ASME B16.47

900# Flange Body Dimensions

Large Diameter Flange Type B Dimensions Header

NPS	O Flange OD	tf : Weld Nexk Flange Thickness	tf : Blind Flange Thickness	Y Hub Length	X Hub Dia.	A Top Hub Dia.	R Raised Face Dia.	r1 Fillet Radius
26	40.25	5.31	6.06	10.19	29.25	26.00	30.00	0.44
28	43.50	5.81	6.56	10.88	31.38	28.00	32.25	0.50
30	46.50	6.12	6.93	11.38	33.50	30.00	34.50	0.50
32	48.75	6.31	7.31	11.94	35.75	32.00	36.50	0.50
34	51.75	6.75	7.68	12.56	37.88	34.00	39.00	0.56
36	53.00	6.81	7.94	12.81	40.00	36.00	40.50	0.56

900# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt
26	35.50	2-5/8″	20	2-1/2″
28	38.25	2-7/8″	20	2-3/4″
30	40.75	3-1/8″	20	3″
32	43.00	3-1/8″	20	3″
34	45.50	3-3/8″	20	3-1/4″
36	47.25	3-1/8″	24	3″

150# | 300# | 400# | 600# | 900#