Stainless Steel Weld Bungs

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	Material Material

304 Stainless Steel

316 Stainless Steel

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

BSPT

	For Pipe Material For Pipe Material	Show

Stainless Steel

304/304L Stainless Steel

304 Stainless Steel

316/316L Stainless Steel

316 Stainless Steel

	For Pipe Material For Pipe Material	Hide

Stainless Steel

304/304L Stainless Steel

304 Stainless Steel

316/316L Stainless Steel

316 Stainless Steel

Steel

Aluminum

	Class Class

150

1000

3000

	Connection Style Connection Style

Threaded

Butt Weld

Socket Connect

	For Pipe Schedule For Pipe Schedule


40	80

	For Use With For Use With

	Length Length

	Maximum Pressure Maximum Pressure

	Specifications Met Specifications Met

ASTM

ANSI/ASME

ANSI/MSS

	Construction Construction

Seamless

Welded

	Maximum Steam Pressure Maximum Steam Pressure

	Wall Thickness Wall Thickness

	OD OD

	ID ID

	Fabrication Fabrication

Heat Treated

Forged

	Dash Size Dash Size

	Socket Depth Socket Depth

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94 Products

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.

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line.

Fittings that meet ANSI/MSS SP-114 adhere to high-quality standards for heat treating, material thickness, and marking. 304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Threaded female x butt weld straight adapters are also known as half couplings.Adapters with weld end allow for a permanent connection.

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

Straight Adapters, Threaded Female × Butt Weld

For Use With: Air, Natural Gas, Oil, Steam, Water
Class: 150
Fabrication: Heat Treated
Specifications Met:
NPT × Butt Weld: ANSI/MSS SP-114, ASTM A351
BSPT × Butt Weld: ANSI/MSS SP-114
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Flanges: Use Class 150 stainless steel

			304 Stainless Steel		316 Stainless Steel
Pipe Size	Max. Pressure	Max. Steam Pressure		Each		Each
NPT Female × Butt Weld
1/8	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	00000
1/4	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	00000000	0000
3/8	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	00000000	0000
1/2	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	00000000	0000
3/4	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	00000000	0000
1	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	00000000	0000
1 1/4	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	00000000	00000
1 1/2	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	00000
2	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	00000
2 1/2	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	00000
3	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	00000
4	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	000000
BSPT Female × Butt Weld
1/8	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	000000	00
1/4	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	000000	00
3/8	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	000000	00
1/2	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	000000	00
3/4	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	000000	00
1	150 psi @ 72° F	150 psi @ 360° F	00000000	0000	000000	00
1 1/2	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	000000	00
2	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	000000	00

Medium-Pressure Stainless Steel Threaded Pipe Fittings

Choose these fittings when you want the same high-quality found in our low-pressure pipe fittings, but need more strength to handle higher pressures.

Fittings that meet ANSI/MSS SP-114 adhere to high-quality standards for heat treating, material thickness, and marking.

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

Threaded female x butt weld straight adapters are also known as half couplings.

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

Straight Adapters, Threaded Female x Butt Weld

For Use With: Air, Natural Gas, Oil, Steam, Water
Class: 1000
Specifications Met: ANSI/MSS SP-114, ASTM A182
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Flanges: Use Class 150 stainless steel

304 Stainless Steel
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
NPT Female × Butt Weld
1/8	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
1/4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
3/8	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
1/2	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
3/4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
1	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
1 1/4	1,000 psi @ 72° F	650 psi @ 350° F	0000000	00000
1 1/2	1,000 psi @ 72° F	650 psi @ 350° F	0000000	00000
2	1,000 psi @ 72° F	650 psi @ 350° F	0000000	00000
2 1/2	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
3	1,000 psi @ 72° F	650 psi @ 350° F	00000000	000000
4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	000000
316 Stainless Steel
NPT Female × Butt Weld
1/8	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
1/4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
3/8	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
1/2	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
3/4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	0000
1	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
1 1/4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
1 1/2	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
2	1,000 psi @ 72° F	650 psi @ 350° F	00000000	00000
2 1/2	1,000 psi @ 72° F	650 psi @ 350° F	00000000	000000
3	1,000 psi @ 72° F	650 psi @ 350° F	00000000	000000
4	1,000 psi @ 72° F	650 psi @ 350° F	00000000	000000

High-Pressure Stainless Steel Threaded Pipe Fittings

Use these heavy duty fittings in high-pressure flow applications.

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

Threaded female x butt weld straight adapters are also known as half couplings.

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

Straight Adapters

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

304 Stainless Steel
Pipe Size	Dash Size	Max. Pressure	Max. Steam Pressure		Each
NPT Female × Butt Weld
1/8	02	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
1/4	04	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	0000
3/8	06	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	0000
1/2	08	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	0000
3/4	12	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	0000
1	16	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
1 1/4	20	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
1 1/2	24	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
2	32	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
2 1/2	40	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
3	48	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	000000
316 Stainless Steel
NPT Female × Butt Weld
1/8	02	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
1/4	04	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
3/8	06	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
1/2	08	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	0000
3/4	12	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1	16	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1 1/4	20	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1 1/2	24	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
2	32	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
2 1/2	40	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	000000
3	48	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	000000

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.

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

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

Straight Adapters

For Use With: Air, Water, Hydraulic Fluid, Natural Gas, Steam, Oil
Class: 3000
Specifications Met: ASTM A182, ANSI/ASME B16.11
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	00000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	0000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	0000
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
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
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

Terms and Conditions and Privacy Policy

How to Identify and Measure Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Medium-Pressure Stainless Steel Threaded Pipe Fittings

High-Pressure Stainless Steel Threaded Pipe Fittings

High-Pressure Socket-Connect StainlessSteel Unthreaded Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Medium-Pressure Stainless Steel Threaded Pipe Fittings

High-Pressure Stainless Steel Threaded Pipe Fittings

High-Pressure Socket-Connect StainlessSteel Unthreaded Pipe Fittings

High-Pressure Socket-Connect Stainless
Steel Unthreaded Pipe Fittings

High-Pressure Socket-Connect Stainless
Steel Unthreaded Pipe Fittings