Steel Metric Pipe | McMaster-Carr

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REACH Compliant

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

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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.

Standard-Wall Steel Threaded Pipe Nipples and Pipe

Also known as Schedule 40, this pipe is designed for low-pressure applications. Use in noncorrosive applications.

Welded pipe has a weld bead on the inside. Seamless pipe has a smooth interior for unrestricted flow and is stronger than welded pipe.

Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.

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

BSPT Fully Threaded

For Use With: Air, Steam, Oil, Water, Natural Gas
Specifications Met: ASTM A53, ASTM A733, DIN EN 10226
Fittings: Use Class 150 Iron and Steel

Pipe Size	Lg.	Construction	Material		Each
1/2	1 1/8"	Welded	Black-Coated Steel	00000000	00000
3/4	1 3/8"	Welded	Black-Coated Steel	00000000	0000
1	1 1/2"	Welded	Black-Coated Steel	00000000	00000
1 1/4	1 5/8"	Welded	Black-Coated Steel	00000000	00000
1 1/2	1 3/4"	Welded	Black-Coated Steel	00000000	00000
2	2"	Seamless	Black-Coated Steel	00000000	00000

BSPT Threaded on Both Ends

For Use With: Air, Steam, Oil, Water, Natural Gas
Specifications Met: See table
Fittings: See table

			For Fitting
Lg.	Construction	Material	Class	Material	Specifications Met		Each
1/2 Pipe Size
1 1/2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	0000
3"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	0000
4"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	0000
6"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
3/4 Pipe Size
1 1/2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	0000
2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	0000
3"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	0000
4"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
1 Pipe Size
1 1/2"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	0000
2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	000000
1 1/4 Pipe Size
2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	000000
1 1/2 Pipe Size
2"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	000000
2 Pipe Size
2"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	ASTM A53, ASTM A733, DIN EN 10226	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	ASME B1.20.1, ASTM A53, ASTM A733	00000000	000000

BSPT × NPT Fully Threaded

For Use With: Air, Steam, Oil, Water, Natural Gas
Specifications Met: ASME B1.20.1, DIN EN 10226, ANSI/ASME BS21
Fittings: Use Class 150 Iron and Steel

Pipe Size	Lg.	Construction	Material		Each
1/2	1 3/16"	Welded	Black-Coated Steel	00000000	000000
3/4	1 11/32"	Welded	Black-Coated Steel	00000000	00000
1	1 31/64"	Welded	Black-Coated Steel	00000000	00000
1 1/4	1 5/8"	Welded	Black-Coated Steel	00000000	00000
1 1/2	1 49/64"	Welded	Black-Coated Steel	00000000	00000
2	1 59/64"	Welded	Black-Coated Steel	00000000	00000

BSPT × NPT Threaded on Both Ends

For Use With: Air, Steam, Oil, Water, Natural Gas
Specifications Met: ASME B1.20.1, ASTM A53, ASTM A733
Fittings: See table

			For Fitting
Lg.	Construction	Material	Class	Material		Each
1/2 Pipe Size
1 1/2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	000000
2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
3/4 Pipe Size
1 1/2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
1 Pipe Size
2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	000000
1 1/4 Pipe Size
2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	000000
1 1/2 Pipe Size
2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	000000
2 Pipe Size
2"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
3"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
4"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
6"	Welded	Black-Coated Steel	150	Iron, Steel	00000000	00000
12"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	00000
36"	Welded	Black-Coated Steel	125, 150	Iron, Steel	00000000	000000

Standard-Wall Galvanized Steel Threaded Pipe Nipples and Pipe

Made of galvanized steel, this Schedule 40 pipe has fair corrosion resistance and is designed for low-pressure applications.

Welded pipe has a weld bead on the inside. Seamless pipe has a smooth interior for unrestricted flow and is stronger than welded pipe.

Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.

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

BSPT Fully Threaded

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A53, ASTM A733, DIN EN 10226
Fittings: Use Class 125 or 150 galvanized iron and galvanized steel
Flanges: Use Class 150 galvanized steel

Pipe Size	Lg.	Construction		Each
1/2	1 1/8"	Welded	00000000	00000
3/4	1 3/8"	Welded	00000000	0000
1	1 1/2"	Welded	00000000	00000
1 1/4	1 5/8"	Welded	00000000	00000
1 1/2	1 3/4"	Welded	00000000	00000
2	2"	Seamless	00000000	00000

BSPT Threaded on Both Ends

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A53, ASTM A733, DIN EN 10226
Fittings: Use Class 125 or 150 galvanized iron and galvanized steel
Flanges: Use Class 150 galvanized steel

1/2 Pipe Size
Lg.	Construction		Each
1 1/2"	Welded	00000000	00000
2"	Welded	00000000	0000
3"	Welded	00000000	0000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
3/4 Pipe Size
1 1/2"	Welded	00000000	0000
2"	Welded	00000000	0000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
1 Pipe Size
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
1 1/4 Pipe Size
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
1 1/2 Pipe Size
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
2 Pipe Size
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000

BSPT × NPT Fully Threaded

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 150
Specifications Met: ANSI/ASME BS21, DIN EN 10226, ASME B1.20.1
Fittings: Use Class 150 galvanized iron and galvanized steel
Flanges: Use Class 150 galvanized steel

Pipe Size	Lg.	Construction		Each
1/2	1 3/16"	Welded	00000000	000000
3/4	1 11/32"	Welded	00000000	00000
1	1 31/64"	Welded	00000000	00000
1 1/2	1 49/64"	Welded	00000000	00000
2	1 59/64"	Welded	00000000	00000

BSPT × NPT Threaded on Both Ends

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A733, ASTM A53, ASME B1.20.1
Fittings: Use Class 125 or 150 galvanized iron and galvanized steel
Flanges: Use Class 150 galvanized steel

1/2 Pipe Size
Lg.	Construction		Each
1 1/2"	Welded	00000000	000000
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
3/4 Pipe Size
1 1/2"	Welded	00000000	00000
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
1 Pipe Size
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
1 1/4 Pipe Size
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	00000
1 1/2 Pipe Size
2"	Welded	00000000	00000
3"	Welded	00000000	00000
4"	Welded	00000000	00000
6"	Welded	00000000	000000
2 Pipe Size
3"	Welded	00000000	00000
4"	Welded	00000000	000000
6"	Welded	00000000	000000

Thick-Wall Steel Threaded Pipe Nipples and Pipe

Also known as Schedule 80, this pipe has thick walls for good strength in medium-pressure applications.

Welded pipe has a weld bead on the inside.

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

BSPT Threaded on Both Ends

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A733
Fittings: Use Class 300 iron or steel
Flanges: Use Class 300 or 600 steel

Welded
Lg.	Material		Each
1/2 Pipe Size
1 1/2"	Black-Coated Steel	00000000	000000
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	00000
36"	Black-Coated Steel	00000000	000000
3/4 Pipe Size
1 1/2"	Black-Coated Steel	00000000	00000
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	00000
36"	Black-Coated Steel	00000000	000000
1 Pipe Size
1 1/2"	Black-Coated Steel	00000000	00000
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	00000
36"	Black-Coated Steel	00000000	000000
1 1/4 Pipe Size
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	000000
36"	Black-Coated Steel	00000000	000000
1 1/2 Pipe Size
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	000000
36"	Black-Coated Steel	00000000	000000
2 Pipe Size
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	000000
36"	Black-Coated Steel	00000000	000000

BSPT × NPT Threaded on Both Ends

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A733
Fittings: Use Class 300 iron or steel
Flanges: Use Class 300 or 600 steel

Welded
Lg.	Material		Each
1/2 Pipe Size
1 1/2"	Black-Coated Steel	00000000	000000
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	00000
36"	Black-Coated Steel	00000000	000000
3/4 Pipe Size
1 1/2"	Black-Coated Steel	00000000	00000
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	00000
36"	Black-Coated Steel	00000000	000000
1 Pipe Size
1 1/2"	Black-Coated Steel	00000000	00000
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	00000
36"	Black-Coated Steel	00000000	000000
1 1/4 Pipe Size
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	000000
36"	Black-Coated Steel	00000000	000000
1 1/2 Pipe Size
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	000000
36"	Black-Coated Steel	00000000	000000
2 Pipe Size
2"	Black-Coated Steel	00000000	00000
3"	Black-Coated Steel	00000000	00000
4"	Black-Coated Steel	00000000	00000
6"	Black-Coated Steel	00000000	00000
12"	Black-Coated Steel	00000000	000000
36"	Black-Coated Steel	00000000	000000