The Piping Engineering World

Metric Dimensions of Socket Weld Flanges as per ASME B16.5

Socket Weld Flange Dimensions

150# | 300# | 400# | 600# | 900# | 1500#

150# Socket Weld Dimensions as per ASME B16.5

150# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	90	9.6	30	14	22.2	15.8	10
3/4	100	11.2	38	14	27.7	20.9	11
1	110	12.7	49	16	34.5	26.6	13
1-1/4	115	14.3	59	19	43.2	35.1	14
1-1/2	125	15.9	65	21	49.5	40.9	16
2	150	17.5	78	24	61.9	52.5	17
2-1/2	180	20.7	90	27	74.6	62.7	19
3	190	22.3	108	29	90.7	77.9	21

150# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	60.3	5/8	4	1/2	55	NA	50
3/4	69.9	5/8	4	1/2	65	NA	50
1	79.4	5/8	4	1/2	65	75	55
1-1/4	88.9	5/8	4	1/2	70	85	55
1-1/2	98.4	5/8	4	1/2	70	85	65
2	120.7	3/4	4	5/8	85	95	70
2-1/2	139.7	3/4	4	5/8	90	100	75
3	152.4	3/4	4	5/8	90	100	75

150# | 300# | 400# | 600# | 900# | 1500#

300# Socket Weld Dimensions as per ASME B16.5

300# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	95	12.7	38	21	22.2	15.8	10
3/4	115	14.3	48	24	27.7	20.9	11
1	125	15.9	54	25	34.5	26.6	13
1-1/4	135	17.5	64	25	43.2	35.1	14
1-1/2	155	19.1	70	29	49.5	40.9	16
2	165	20.7	84	32	61.9	52.5	17
2-1/2	190	23.9	100	37	74.6	62.7	19
3	210	27	117	41	90.7	77.9	21

300# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	66.7	5/8	4	1/2	65	75	55
3/4	82.6	3/4	4	5/8	75	90	65
1	88.9	3/4	4	5/8	75	90	65
1-1/4	98.4	3/4	4	5/8	85	95	70
1-1/2	114.3	7/8	4	3/4	90	100	75
2	127	3/4	8	5/8	90	100	75
2-1/2	149.2	7/8	8	3/4	100	115	85
3	168.3	7/8	8	3/4	110	120	90

150# | 300# | 400# | 600# | 900# | 1500#

400# Socket Weld Dimensions as per ASME B16.5

400# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	95	14.3	38	22	22.2	3	10
3/4	115	15.9	48	25	27.7	3	11
1	125	17.5	54	27	34.5	3	13
1-1/4	135	20.7	64	29	43.2	5	14
1-1/2	155	22.3	70	32	49.5	6	16
2	165	25.4	84	37	61.9	8	17
2-1/2	190	28.6	100	41	74.6	8	19
3	210	31.8	117	46	90.7	10	21

400# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	66.7	5/8	4	1/2	75	70	75
3/4	82.6	3/4	4	5/8	90	85	90
1	88.9	3/4	4	5/8	90	85	90
1-1/4	98.4	3/4	4	5/8	95	90	95
1-1/2	114.3	7/8	4	3/4	110	100	110
2	127	3/4	8	5/8	110	100	110
2-1/2	149.2	7/8	8	3/4	120	115	120
3	168.3	7/8	8	3/4	125	120	125

150# | 300# | 400# | 600# | 900# | 1500#

600# Socket Weld Dimensions as per ASME B16.5

600# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	95	14.3	38	22	22.2	BY P	10
3/4	115	15.9	48	25	27.7	BY P	11
1	125	17.5	54	27	34.5	BY P	13
1-1/4	135	20.7	64	29	43.2	BY P	14
1-1/2	155	22.3	70	32	49.5	BY P	16
2	165	25.4	84	37	61.9	BY P	17
2-1/2	190	28.6	100	41	74.6	BY P	19
3	210	31.8	117	46	90.7	BY P	21

600# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	66.7	5/8	4	1/2	75	70	75
3/4	82.6	3/4	4	5/8	90	85	90
1	88.9	3/4	4	5/8	90	85	90
1-1/4	98.4	3/4	4	5/8	95	90	95
1-1/2	114.3	7/8	4	3/4	110	100	110
2	127	3/4	8	5/8	110	100	110
2-1/2	149.2	7/8	8	3/4	120	115	120
3	168.3	7/8	8	3/4	125	120	125

150# | 300# | 400# | 600# | 900# | 1500#

900# Socket Weld Dimensions as per ASME B16.5

900# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	120	22.3	38	32	22.2	BY P	10
3/4	130	25.4	44	35	27.7	BY P	11
1	150	28.6	52	41	34.5	BY P	13
1-1/4	160	28.6	64	41	43.2	BY P	14
1-1/2	180	31.8	70	44	49.5	BY P	16
2	215	38.1	105	57	61.9	BY P	17
2-1/2	245	41.3	124	64	74.6	BY P	19

900# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	82.6	7/8	4	3/4	110	100	110
3/4	88.9	7/8	4	3/4	115	110	115
1	101.6	1	4	7/8	125	120	125
1-1/4	111.1	1	4	7/8	125	120	125
1-1/2	123.8	1-1/8	4	1	140	135	140
2	165.1	1	8	7/8	145	140	145
2-1/2	190.5	1-1/8	8	1	160	150	160

150# | 300# | 400# | 600# | 900# | 1500#

1500# Socket Weld Dimensions as per ASME B16.5

1500# Flange Body Dimensions

Socket Weld Dimensions Header

NPS	O Flange OD	tf Flange Thickness	X Hub Dia.	Y Hub Length	B11 Pipe Side Bore Dia	B13 Face Side Bore Dia	D Depth of Socket
1/2	120	22.3	38	32	22.2	BY P	10
3/4	130	25.4	44	35	27.7	BY P	11
1	150	28.6	52	41	34.5	BY P	13
1-1/4	160	28.6	64	41	43.2	BY P	14
1-1/2	180	31.8	70	44	49.5	BY P	16
2	215	38.1	105	57	61.9	BY P	17
2-1/2	245	41.3	124	64	74.6	BY P	19

1500# Bolts Template

Flange Drilling Template

NPS	BCD Bolt Circle Dia.	BHD Bolt Hole Dia	BOLTS Number of Bolts	BD Dia. Of Bolt	SBL RF Stud Bolt Length (RF)	SBL RJ Stud Bolt Length (RJ)	MBL RF Machine Bolt Length (RF)
1/2	82.6	7/8	4	3/4	110	100	110
3/4	88.9	7/8	4	3/4	115	110	115
1	101.6	1	4	7/8	125	120	125
1-1/4	111.1	1	4	7/8	125	120	125
1-1/2	123.8	1-1/8	4	1	140	135	140
2	165.1	1	8	7/8	145	140	145
2-1/2	190.5	1-1/8	8	1	160	150	160

150# | 300# | 400# | 600# | 900# | 1500#

General Notes

Dimensions are in millimeters, except for diameters of bolts and bolt holes, which are in inch units.