Steel Line | McMaster-Carr

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	Pipe Size Pipe Size

1/8

1/4

	Thread Type Thread Type

NPT

BSPT

	Threading Threading

Threaded on Both Ends

Threaded on One End

Unthreaded

Fully Threaded

	Schedule Schedule


40	80

160	XXH

	Material Material

Steel

Plastic

	Type Type


Pipe	Adapter

Reducer

	System of Measurement System of Measurement

Inch

Metric

	Length Length

	For Use With For Use With

	Connection Style Connection Style

	OD OD

	ID ID

	Finish Finish

Black Coated

Galvanized

Zinc Yellow-Chromate Plated

Zinc Plated

Painted

	Wall Thickness Wall Thickness

	Specifications Met Specifications Met

ASTM

SAE

DIN

ANSI/ASME

MSS

	Construction Construction

Welded

Seamless

	Compatible Tube Fittings Compatible Tube Fittings

	Compression
	Flared
	Vacuum

	Fabrication Fabrication

Seamless

Welded

	Form Form

Straight

Coil

	Maximum Pressure Maximum Pressure

	Flareable Flareable

Yes

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

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2,305 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.

Smooth-Bore Seamless Steel Tubing

Seamless construction with no weld bead gives this tubing a smooth interior for unrestricted flow. It can be flared without splitting.

Welded Steel Tubing

Tubing is welded with a smoothed weld bead on the inside to reduce particle buildup. It is also known as DOM (drawn over mandrel) tubing.

Corrosion-Resistant Steel Tubing

A thin layer of zinc yellow-chromate gives this tubing extra corrosion resistance, making it an economical alternative to stainless steel.

Precision Steel Tubing

With the lowest OD tolerance of all our steel tubing, this tubing is designed for precision applications.

Vacuum-Rated
Large-Diameter Steel Tubing

This tubing has the strength to withstand vacuum applications up to 29" Hg.

Iron and Steel Pipe and Pipe Fittings

Thick-Wall Steel Unthreaded Pipe

Typically used with thick-wall and high-pressure iron and steel unthreaded pipe fittings. Also known as Schedule 80.

Standard-Wall Steel Unthreaded
Pipe Nipples and Pipe

Typically used with standard-wall and low-pressure iron and steel unthreaded pipe fittings. Also known as Schedule 40.

Extra-Thick-Wall Steel
Unthreaded Pipe

Typically used with extreme-pressure iron and steel unthreaded pipe fittings. Pipe is also known as Schedule XXH .

Extra-Thick-Wall Steel Threaded
Pipe Nipples and Pipe

Typically used with high-pressure iron and steel threaded pipe fittings. Also known as Schedule 160.

Extra-Thick-Wall Galvanized Steel
Threaded Pipe Nipples and Pipe

Typically used with high-pressure galvanized iron and steel threaded pipe fittings. Also known as Schedule 160.

Standard-Wall Galvanized Steel
Threaded Pipe Nipple
and Pipe Assortments

Assortments contain threaded pipe in various lengths.

Standard-Wall Galvanized
Steel Pipe Nipples and Pipe
for Joining Dissimilar Metals

A plastic sleeve prevents destructive corrosion when connecting different metals.

Standard-Wall Steel Threaded
Pipe Nipple and Pipe Assortments

Assortments contain threaded pipe in various lengths.

Thick-Wall Steel Threaded
Pipe Nipples and Pipe

Typically used with medium-pressure iron and steel threaded pipe fittings. Also known as Schedule 80.

Standard-Wall Steel Pipe Nipples
and Pipe with Right-Hand
and Left-Hand Threads

Pipe has clockwise (right-hand) threads on one end and counterclockwise (left-hand) threads on the other end. When you use a wrench to turn, connections on both ends tighten at the same time.

Thick-Wall Galvanized Iron and Steel
Threaded Pipe Nipples and Pipe

Typically used with medium-pressure galvanized iron and steel threaded pipe fittings. Also known as Schedule 80.

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.

Super-Thick-Wall Steel
Threaded Pipe Nipples and Pipe

Typically used with extreme-pressure iron and steel threaded pipe fittings. Also known as Schedule XXH.

Standard-Wall Steel Threaded
Pipe Nipples and Pipe

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

Standard-Wall Grooved-End
Steel Pipe Nipples and Pipe

This steel pipe has grooved ends that connect to fittings with a clamp (sold separately) for an easy way to install piping systems.

Corrosion-Resistant Bend-and-Stay Coolant Hose

Corrosion-Resistant
Bend-and-Stay Coolant Hose

Made of PVC with a stainless steel nozzle, this hose stands up to harsh environments.

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How to Identify and Measure Fittings

Steel Tubing

Smooth-Bore Seamless Steel Tubing

Welded Steel Tubing

Corrosion-Resistant Steel Tubing

Precision Steel Tubing

Vacuum-RatedLarge-Diameter Steel Tubing

Iron and Steel Pipe and Pipe Fittings

Thick-Wall Steel Unthreaded Pipe

Standard-Wall Steel UnthreadedPipe Nipples and Pipe

Extra-Thick-Wall SteelUnthreaded Pipe

Extra-Thick-Wall Steel ThreadedPipe Nipples and Pipe

Extra-Thick-Wall Galvanized SteelThreaded Pipe Nipples and Pipe

Standard-Wall Galvanized SteelThreaded Pipe Nipple and Pipe Assortments

Standard-Wall GalvanizedSteel Pipe Nipples and Pipe for Joining Dissimilar Metals

Standard-Wall Steel ThreadedPipe Nipple and Pipe Assortments

Thick-Wall Steel ThreadedPipe Nipples and Pipe

Standard-Wall Steel Pipe Nipplesand Pipe with Right-Hand and Left-Hand Threads

Thick-Wall Galvanized Iron and SteelThreaded Pipe Nipples and Pipe

Standard-Wall Galvanized SteelThreaded Pipe Nipples and Pipe

Super-Thick-Wall SteelThreaded Pipe Nipples and Pipe

Standard-Wall Steel ThreadedPipe Nipples and Pipe

Standard-Wall Grooved-EndSteel Pipe Nipples and Pipe