Thick-Wall Stainless Steel Butt-Weld Pipe Fittings

	Material Material

304 Stainless Steel

316 Stainless Steel

	Pipe Size Pipe Size

	Connection Style Connection Style

Butt Weld

Threaded

Socket Connect

	Shape Shape


Straight	Tee

45° Elbow	90° Elbow

Cap/Plug

	Type Type


Pipe	Outlet

Connector	Adapter

Cap

	For Pipe Material For Pipe Material

304 Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

304/304L Stainless Steel

	Length Length

	ID ID

	Wall Thickness Wall Thickness

	Construction Construction

Seamless

Welded

	For Use With For Use With

	Specifications Met Specifications Met

ASTM

ASME

MSS

	OD OD

	Maximum Pressure Maximum Pressure

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	For Pipe Size -2 For Pipe Size -2

	Gender Gender

Male

Female

	Maximum Steam Pressure Maximum Steam Pressure

	Fabrication Fabrication

Machined

Forged

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

RoHS Compliant

	Dash Size Dash Size

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Height Height

173 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.

Thick-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings

With a thicker wall than our standard-wall butt-weld pipe fittings, these offer high strength while providing a smooth connection for maximum flow. They have beveled ends that, when flush to pipe, create a trough for a leak-resistant, permanent weld.

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

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.

90° Elbow Connectors

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A403
Pipe Nipples and Pipe: Use Schedule 80 stainless steel
Fittings: Use Class 300 or 600 stainless steel

			304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Wall Thick.	Construction		Each		Each
1	0.179"	Welded	0000000	000000	0000000	0000000
1 1/2	0.2"	Welded	0000000	000000	0000000	000000
2	0.218"	Welded	0000000	000000	0000000	000000
3	0.3"	Welded	0000000	000000	0000000	000000

45° Elbow Connectors

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A403
Pipe Nipples and Pipe: Use Schedule 80 stainless steel
Fittings: Use Class 300 or 600 stainless steel

			304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Wall Thick.	Construction		Each		Each
1	0.179"	Welded	0000000	000000	0000000	0000000
1 1/2	0.2"	Welded	0000000	000000	0000000	000000
2	0.218"	Welded	0000000	000000	0000000	000000
3	0.3"	Welded	0000000	000000	0000000	000000

Tee Connectors

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A403
Pipe Nipples and Pipe: Use Schedule 80 stainless steel
Fittings: Use Class 300 or 600 stainless steel

			304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Wall Thick.	Construction		Each		Each
1	0.179"	Welded	0000000	0000000	0000000	0000000
1 1/2	0.2"	Welded	0000000	000000	0000000	000000
2	0.218"	Welded	0000000	000000	0000000	000000
3	0.3"	Welded	0000000	000000	0000000	000000

Tee Outlets

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASME B31.1, MSS SP-97
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size (Wall Thick.)	For Pipe Size (Wall Thick.)	Ht.	Construction	Max. Pressure	Max. Steam Pressure		Each
1/4 (0.119")	1/4 to 3/8 (0.238")	5/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	000000
1/4 (0.119")	1/4 to 36 (0.238")	5/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1/4 (0.119")	1/2 to 36 (0.238")	5/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/8 (0.126")	3/8 to 1/2 (0.252")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/8 (0.126")	3/4 to 36 (0.252")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/8 (0.126")	3/8 to 36 (0.252")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1/2 (0.147")	1/2 (0.294")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1/2 (0.147")	1/2 to 36 (0.294")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1/2 (0.147")	3/4 to 36 (0.294")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/4 (0.154")	1 1/2 to 36 (0.308")	7/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/4 (0.154")	3/4 to 1 1/4 (0.308")	7/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/4 (0.154")	3/4 to 36 (0.308")	7/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1 (0.179")	1 to 36 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1 (0.179")	1 1/4 to 2 1/2 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 (0.179")	1 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 (0.179")	3 to 36 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/4 (0.191")	1 1/4 to 36 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1 1/4 (0.191")	1 1/4 to 1 1/2 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/4 (0.191")	2 to 3 1/2 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/4 (0.191")	4 to 36 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/2 (0.2")	6 to 36 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
1 1/2 (0.2")	1 1/2 to 36 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	0000000	000000
1 1/2 (0.2")	1 1/2 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
1 1/2 (0.2")	2 to 2 1/2 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
1 1/2 (0.2")	3 to 5 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	4 to 6 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	8 to 36 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	2 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	2 1/2 to 3 1/2 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	2 to 36 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	0000000	000000
316/316L Stainless Steel
1/4 (0.119")	1/4 to 3/8 (0.238")	5/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1/4 (0.119")	1/4 to 36 (0.238")	5/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1/4 (0.119")	1/2 to 36 (0.238")	5/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/8 (0.126")	3/8 to 1/2 (0.252")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/8 (0.126")	3/4 to 36 (0.252")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1/2 (0.147")	1/2 (0.294")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1/2 (0.147")	1/2 to 36 (0.294")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1/2 (0.147")	3/4 to 36 (0.294")	3/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/4 (0.154")	1 1/2 to 36 (0.308")	7/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/4 (0.154")	3/4 to 1 1/4 (0.308")	7/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
3/4 (0.154")	3/4 to 36 (0.308")	7/8"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1 (0.179")	1 to 36 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1 (0.179")	1 1/4 to 2 1/2 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 (0.179")	1 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 (0.179")	3 to 36 (0.358")	1 1/16"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/4 (0.191")	1 1/4 to 36 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	0000000	00000
1 1/4 (0.191")	1 1/4 to 1 1/2 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/4 (0.191")	2 to 3 1/2 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/4 (0.191")	4 to 36 (0.382")	1 1/4"	Seamless	3,000 psi @ 72° F	600 psi @ 220° F	00000000	00000
1 1/2 (0.2")	6 to 36 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
1 1/2 (0.2")	1 1/2 to 36 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	0000000	000000
1 1/2 (0.2")	1 1/2 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
1 1/2 (0.2")	2 to 2 1/2 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
1 1/2 (0.2")	3 to 5 (0.4")	1 5/16"	Seamless	2,800 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	4 to 6 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	8 to 36 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	2 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	2 1/2 to 3 1/2 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	00000000	000000
2 (0.218")	2 to 36 (0.436")	1 1/2"	Seamless	2,500 psi @ 72° F	600 psi @ 220° F	0000000	000000

Caps

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A403
Pipe Nipples and Pipe: Use Schedule 80 stainless steel
Fittings: Use Class 300 or 600 stainless steel

			304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Wall Thick.	Construction		Each		Each
1	0.179"	Seamless	0000000	0000000	0000000	0000000
1 1/2	0.2"	Seamless	0000000	000000	0000000	000000
2	0.218"	Seamless	0000000	000000	0000000	000000
3	0.3"	Seamless	0000000	000000	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	000000
6	0.119"	Seamless	00000000	000000	00000000	000000
3/8 Pipe Size—06 Dash Size
1	0.126"	Seamless	00000000	00000	00000000	00000
3	0.126"	Seamless	00000000	000000	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	000000	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

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, Threaded Female × Butt Weld

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Pressure Class: 3000
Specifications Met: ASTM A182, ASME B16.11
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	00000
1/2	08	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
3/4	12	2,500 psi @ 72° F	1,900 psi @ 350° F	000000000	00000
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	000000
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	00000
1/4	04	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
3/8	06	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
1/2	08	3,000 psi @ 72° F	2,800 psi @ 350° F	00000000	00000
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	000000
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