ASME/ANSI B16.5 Class 150 SW

Socket-weld pipe flanges are typically used on smaller sizes of high pressure pipes.  These pipe flanges are attached by inserting the pipe into the socket end and applying fillet weld around the top.

This allows for a smooth bore and better flow of the fluid or gas inside of the pipe.  

Slip on Pipe flanges with a hub have published specifications that range from 1/2" thru 24".  Coastal Flange provides Socket Weld pipe flanges in all material grades, specifications and sizes.

Nominal Pipe Size	Outside Diameter of Flange	Diameter of Raised Face	Thickness of Flanges Min.	Diameter of Hub	Length Through Hub	Bore		Depth of Socket	Diameter of Bolt Circle	Diameter of Bolt Holes	Number of Bolts	Approxi-mate Weight kgs
NPS	O	R	tf	X	Y	B1	B2	D	W	I	n
1/2	90	34.9	9.6	30	14	22.2	15.8	10	60.3	15.9	4	0.42
3/4	100	42.9	11.2	38	14	27.7	20.9	11	69.9	15.9	4	0.60
1	110	50.8	12.7	49	16	34.5	26.6	13	79.4	15.9	4	0.83
1 1/4	115	63.5	14.3	59	19	43.2	35.1	14	88.9	15.9	4	1.01
1 1/2	125	73.0	15.9	65	21	49.5	40.9	16	98.4	15.9	4	1.32
2	150	92.1	17.5	78	24	61.9	52.5	17	120.7	19.1	4	2.07
2 1/2	180	104.8	20.7	90	27	74.6	62.7	19	139.7	19.1	4	3.51
3	190	127.0	22.3	108	29	90.7	77.9	21	152.4	19.1	4	4.01