ASTM A126 Pipe Fittings | McMaster-Carr

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182 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.

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Fittings

Suitable for use in fire-protection applications, these pipe fittings are made of cast iron, so they are brittle and can be quickly opened with the strike of a sledge hammer.

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Suitable for use in fire-protection applications, these flanges are brittle and can be quickly opened with the strike of a sledge hammer.

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.

Medium-Pressure Iron and
Steel Threaded Pipe Fittings

For use in noncorrosive environments, these fittings have better strength than our low-pressure iron and steel pipe fittings.

FM-Approved Low-Pressure Cast
Iron Unthreaded Pipe Flanges

FM-approved for fire protection applications, these flanges are cast iron, so they're brittle and can be quickly opened by hitting them with a sledge hammer.

FM-Approved Iron Pipe Fittings with Flanged Ends

FM approved, these fittings are suitable for use in fire-protection systems. All have flat-surface flanged ends that only mate to another same-size flat-surface flange, pump, or valve with a gasket to create an access point in a pipeline.

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How to Identify and Measure Fittings

Iron and Steel Pipe and Pipe Fittings

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Fittings

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Medium-Pressure Iron and
Steel Threaded Pipe Fittings

FM-Approved Low-Pressure Cast
Iron Unthreaded Pipe Flanges

FM-Approved Iron Pipe Fittings with Flanged Ends

How to Identify and Measure Fittings

Iron and Steel Pipe and Pipe Fittings

FM-Approved Low-PressureCast Iron Threaded Pipe Fittings

FM-Approved Low-PressureCast Iron Threaded Pipe Flanges

Low-Pressure Galvanized Ironand Steel Threaded Pipe Fittings

Medium-Pressure Iron andSteel Threaded Pipe Fittings

FM-Approved Low-Pressure CastIron Unthreaded Pipe Flanges

FM-Approved Iron Pipe Fittings with Flanged Ends

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Fittings

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Medium-Pressure Iron and
Steel Threaded Pipe Fittings

FM-Approved Low-Pressure Cast
Iron Unthreaded Pipe Flanges