ASTM A234 Pipe Fittings | McMaster-Carr

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OSHA Compliant 29 CFR 1926.701

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285 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.

Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.

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 Butt-Weld Steel
Unthreaded Pipe Fittings

Butt-weld fittings allow for a smooth, flush connection that provides maximum flow.

Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings

With thicker, stronger walls than our standard-wall butt-weld pipe fittings, these fittings stand up to your high strength applications.

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How to Identify and Measure Fittings

Iron and Steel Pipe and Pipe Fittings

Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

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

Standard-Wall Butt-Weld Steel
Unthreaded Pipe Fittings

Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings

How to Identify and Measure Fittings

Iron and Steel Pipe and Pipe Fittings

Medium-Pressure Galvanized Ironand Steel Threaded Pipe Fittings

Thick-Wall Galvanized Iron and SteelThreaded Pipe Nipples and Pipe

Standard-Wall Butt-Weld SteelUnthreaded Pipe Fittings

Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings

Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

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

Standard-Wall Butt-Weld Steel
Unthreaded Pipe Fittings