High-Pressure Stainless Steel Socket-Weld Pipe Fittings

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How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

High-Pressure Socket-Connect Stainless Steel Unthreaded Pipe Fittings

Forged for excellent strength, these heavy duty socket-connect fittings stand up to high-pressure applications. They are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Union straight connectors separate into three pieces for access to your line.

Socket connect x butt weld straight adapters are also known as half couplings.

Tee outlets allow you to create a tap anywhere along a pipe. They are also known as branch connectors and are comparable to Weldolet. To install, drill a hole in your pipe to match the fitting’s pipe size and weld in place.

For technical drawings and 3-D models, click on a part number.

Straight Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	2,500 psi @ 72° F	00000000	000000
316/316L Stainless Steel
1/8	02	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000

Union Straight Connectors

Exploded View

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

				304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each		Each
1/4	04	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	000000	000000000	0000000
3/8	06	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	00000	000000000	000000
1/2	08	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	00000	000000000	000000
3/4	12	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	000000	000000000	000000
1	16	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	000000	000000000	000000
1 1/2	24	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	000000	000000000	000000
2	32	1,900 psi @ 350° F	2,900 psi @ 72° F	000000000	000000	000000000	000000

Straight Adapters

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
Socket Connect × Butt Weld
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
316/316L Stainless Steel
Socket Connect × Butt Weld
1/8	02	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000

Bushing Straight Reducing Adapters

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

Pipe Size		Dash Size
(A)	(B)	(A)	(B)	Max. Steam Pressure	Max. Pressure		Each
304/304L Stainless Steel
Socket Connect Male × Socket Connect Female
3/8	1/4	06	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/2	1/4	08	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	3/8	08	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	1/2	12	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	3/4	16	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	1 1/4	24	20	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	1 1/2	32	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
316/316L Stainless Steel
Socket Connect Male × Socket Connect Female
1/4	1/8	04	02	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	1/4	06	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	1/4	08	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	3/8	08	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	1/2	12	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	3/4	16	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1 1/2	1 1/4	24	20	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
2	1 1/2	32	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000

Straight Reducers

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

Pipe Size		Dash Size
(A)	(B)	(A)	(B)	Max. Steam Pressure	Max. Pressure		Each
304/304L Stainless Steel
1/4	1/8	04	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
3/8	1/4	06	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	1/4	08	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	3/8	08	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	1/2	12	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	3/4	16	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	1 1/4	24	20	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
2	1 1/2	32	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
316/316L Stainless Steel
1/2	1/4	08	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	3/8	08	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	1/2	12	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	3/4	16	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
1 1/2	1 1/4	24	20	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
2	1 1/2	32	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000

90° Elbow Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	2,500 psi @ 72° F	00000000	000000
316/316L Stainless Steel
1/8	02	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	3,000 psi @ 72° F	00000000	000000

45° Elbow Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3	48	1,900 psi @ 350° F	2,500 psi @ 72° F	00000000	000000
316/316L Stainless Steel
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000

Tee Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	2,500 psi @ 72° F	00000000	000000
316/316L Stainless Steel
1/8	02	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	3,000 psi @ 72° F	00000000	000000

Tee Outlets

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	For Pipe Size	Height	Max. Pressure	Max. Steam Pressure		Each
Socket Connect × Butt Weld
1/4	1/4 to 3/8	3/4"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
1/4	1/2 to 36	3/4"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
3/8	3/4 to 36	13/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
1/2	1/2	1"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
1/2	3/4 to 36	1"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
3/4	1 1/2 to 36	1 1/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
3/4	3/4 to 1 1/4	1 1/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
1	1 1/4 to 2 1/2	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
1	1	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
1	3 to 36	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	00000
1 1/4	2 to 3 1/2	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
1 1/2	6 to 36	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
1 1/2	1 1/2	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
1 1/2	2 to 2 1/2	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
1 1/2	3 to 5	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
2	4 to 6	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
2	8 to 36	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
2	2	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
2	2 1/2 to 3 1/2	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	0000000	000000
316/316L Stainless Steel
Socket Connect × Butt Weld
1/4	1/4 to 3/8	3/4"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1/4	1/2 to 36	3/4"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
3/8	3/4 to 36	13/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1/2	1/2	1"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1/2	3/4 to 36	1"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
3/4	1 1/2 to 36	1 1/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
3/4	3/4 to 1 1/4	1 1/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1	1 1/4 to 2 1/2	1 5/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1	1	1 5/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1	3 to 36	1 5/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	00000
1 1/2	6 to 36	1 3/8"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	000000
1 1/2	3 to 5	1 3/8"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	000000
2	4 to 6	1 1/2"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	000000
2	2	1 1/2"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	000000
2	2 1/2 to 3 1/2	1 1/2"	2,900 psi @ 72° F	2,480 psi @ 212° F	0000000	000000

Cross Connectors

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
316/316L Stainless Steel
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
1 1/2	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000

Caps

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Specifications Met: ASME B16.11, ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000
3	48	1,900 psi @ 350° F	2,500 psi @ 72° F	00000000	000000
316/316L Stainless Steel
1/4	04	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	3,000 psi @ 72° F	000000000	000000
3	48	1,900 psi @ 350° F	3,000 psi @ 72° F	00000000	000000

High-Pressure Stainless Steel Unthreaded Pipe Flanges

Use these heavy duty forged flanges for high-pressure applications. Bolt two flat-surface flanges or two raised-surface flanges of same size together with a gasket (sold separately) to create an access point in a pipe line.

304 stainless steel flanges offer very good corrosion resistance. 316 stainless steel flanges have excellent corrosion resistance.

Socket-connect flanges have an internal stop that supports the pipe when welding and prevents the pipe from sliding all the way through.

For technical drawings and 3-D models, click on a part number.

Socket-Connect Flanges

Front

Raised Surface on Back

For Use With:
4 and 6 Pipe Sizes: Air, Hydraulic Fluid, Natural Gas, Oil, Water
All other sizes: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: See table
Specifications Met: See table
Certification:: Material Certificate with Traceable Lot Number and Test Report
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Fittings: Use Schedule 40 stainless steel

						Bolt Hole
Pipe Size	Dash Size	Max. Pressure	Max. Steam Pressure	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Specifications Met		Each
304/304L Stainless Steel
Pressure Class 300
1/2	08	600 psi @ 72° F	300 psi @ 360° F	3 3/4"	1/2"	0.625"	4	2 5/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
3/4	12	600 psi @ 72° F	300 psi @ 360° F	4 5/8"	5/8"	0.75"	4	3 1/4"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	00000
1	16	600 psi @ 72° F	300 psi @ 360° F	4 7/8"	5/8"	0.75"	4	3 1/2"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	00000
1 1/4	20	600 psi @ 72° F	300 psi @ 360° F	5 1/4"	5/8"	0.75"	4	3 7/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
1 1/2	24	600 psi @ 72° F	300 psi @ 360° F	6 1/8"	3/4"	0.875"	4	4 1/2"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	00000
2	32	600 psi @ 72° F	300 psi @ 360° F	6 1/2"	5/8"	0.75"	8	5"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
2 1/2	40	600 psi @ 72° F	300 psi @ 360° F	7 1/2"	3/4"	0.875"	8	5 7/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
3	48	600 psi @ 72° F	300 psi @ 360° F	8 1/4"	3/4"	0.875"	8	6 5/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
4	64	600 psi @ 72° F	300 psi @ 360° F	10"	3/4"	0.875"	8	7 7/8"	ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
6	96	600 psi @ 72° F	300 psi @ 360° F	12 1/2"	3/4"	0.875"	12	10 5/8"	ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
Pressure Class 600
1	16	1,200 psi @ 72° F	840 psi @ 400° F	4 7/8"	5/8"	0.75"	4	3 1/2"	ASME B16.5, ASTM A182	0000000	00000
1 1/2	24	1,200 psi @ 72° F	840 psi @ 400° F	6 1/8"	3/4"	0.875"	4	4 1/2"	ASME B16.5, ASTM A182	0000000	000000
2	32	1,200 psi @ 72° F	840 psi @ 400° F	6 1/2"	5/8"	0.75"	8	5"	ASME B16.5, ASTM A182	0000000	000000
3	48	1,200 psi @ 72° F	840 psi @ 400° F	8 1/4"	3/4"	0.88"	8	6 5/8"	ASME B16.5, ASTM A182	0000000	000000
316/316L Stainless Steel
Pressure Class 300
1/2	08	600 psi @ 72° F	300 psi @ 360° F	3 3/4"	1/2"	0.625"	4	2 5/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	00000
3/4	12	600 psi @ 72° F	300 psi @ 360° F	4 5/8"	5/8"	0.75"	4	3 1/4"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	00000
1	16	600 psi @ 72° F	300 psi @ 360° F	4 7/8"	5/8"	0.75"	4	3 1/2"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	00000
1 1/4	20	600 psi @ 72° F	300 psi @ 360° F	5 1/4"	5/8"	0.75"	4	3 7/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
1 1/2	24	600 psi @ 72° F	300 psi @ 360° F	6 1/8"	3/4"	0.875"	4	4 1/2"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
2	32	600 psi @ 72° F	300 psi @ 360° F	6 1/2"	5/8"	0.75"	8	5"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
3	48	600 psi @ 72° F	300 psi @ 360° F	8 1/4"	3/4"	0.875"	8	6 5/8"	ASME B16.5, ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
4	64	600 psi @ 72° F	300 psi @ 360° F	10"	3/4"	0.875"	8	7 7/8"	ASTM A182, MSS SP-25, MSS SP-6	00000000	000000
Pressure Class 600
1/2	08	1,200 psi @ 72° F	840 psi @ 400° F	3 3/4"	1/2"	0.62"	4	2 5/8"	ASME B16.5, ASTM A182	0000000	00000
3/4	12	1,200 psi @ 72° F	840 psi @ 400° F	4 5/8"	5/8"	0.75"	4	3 1/4"	ASME B16.5, ASTM A182	0000000	00000
1	16	1,200 psi @ 72° F	840 psi @ 400° F	4 7/8"	5/8"	0.75"	4	3 1/2"	ASME B16.5, ASTM A182	0000000	000000
1 1/2	24	1,200 psi @ 72° F	840 psi @ 400° F	6 1/8"	3/4"	0.875"	4	4 1/2"	ASME B16.5, ASTM A182	0000000	000000
2	32	1,200 psi @ 72° F	840 psi @ 400° F	6 1/2"	5/8"	0.75"	8	5"	ASME B16.5, ASTM A182	0000000	000000

Thick-Wall Stainless Steel Unthreaded Pipe

For Use With: Air, Water, Hydraulic Fluid, Natural Gas, Steam, Oil
Specifications Met: ASTM A312
Fittings: Use Class 3000 or Schedule 80 stainless steel
Flanges: Use Class 300 or 600 stainless steel

Also known as Schedule 80, this pipe provides an extra-strong connection. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak. Pipe is seamless with a smooth interior for unrestricted flow.

304 stainless steel pipe has very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

			304/304L Stainless Steel		316/316L Stainless Steel
Lg., ft.	Wall Thick.	Construction		Each		Each
1/4 Pipe Size—04 Dash Size
1	0.119"	Seamless	00000000	000000	00000000	000000
3	0.119"	Seamless	00000000	00000	00000000	00000
6	0.119"	Seamless	00000000	00000	00000000	000000
3/8 Pipe Size—06 Dash Size
1	0.126"	Seamless	00000000	00000	00000000	00000
3	0.126"	Seamless	00000000	00000	00000000	000000
6	0.126"	Seamless	00000000	000000	00000000	000000
1/2 Pipe Size—08 Dash Size
1	0.147"	Seamless	00000000	00000	00000000	00000
3	0.147"	Seamless	00000000	00000	00000000	000000
6	0.147"	Seamless	00000000	000000	00000000	000000
3/4 Pipe Size—12 Dash Size
1	0.154"	Seamless	00000000	00000	00000000	00000
3	0.154"	Seamless	00000000	000000	00000000	000000
6	0.154"	Seamless	00000000	000000	00000000	000000
1 Pipe Size—16 Dash Size
1	0.179"	Seamless	00000000	00000	00000000	00000
3	0.179"	Seamless	00000000	000000	00000000	000000
6	0.179"	Seamless	00000000	000000	00000000	000000
1 1/2 Pipe Size—24 Dash Size
1	0.2"	Seamless	00000000	00000	00000000	000000
3	0.2"	Seamless	00000000	000000	00000000	000000
6	0.2"	Seamless	00000000	000000	00000000	000000
2 Pipe Size—32 Dash Size
1	0.218"	Seamless	00000000	000000	00000000	000000
3	0.218"	Seamless	00000000	000000	00000000	000000
6	0.218"	Seamless	00000000	000000	00000000	000000
3 Pipe Size—48 Dash Size
1	0.3"	Seamless	00000000	000000	00000000	000000
3	0.3"	Seamless	00000000	000000	00000000	000000
6	0.3"	Seamless	00000000	000000	00000000	000000
4 Pipe Size—64 Dash Size
1	0.337"	Seamless	00000000	000000	00000000	000000
3	0.337"	Seamless	00000000	000000	00000000	000000
6	0.337"	Seamless	00000000	000000	00000000	00000000
6 Pipe Size—96 Dash Size
1	0.432"	Seamless	00000000	000000	00000000	000000
3	0.432"	Seamless	00000000	000000	00000000	00000000
6	0.432"	Seamless	00000000	00000000	00000000	00000000