Iron and Steel Raised-Face Pipe Flanges | McMaster-Carr

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Stainless Steel

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Maximum Steam Pressure @ Temperature

150 psi @ 300° F

180 psi @ 300° F

230 psi @ 300° F

300 psi @ 300° F

1,300 psi @ 300° F

3,200 psi @ 300° F

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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.

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Iron and Steel Pipe and Pipe Fittings

Low-Pressure Steel Unthreaded Pipe Flanges

Low-Pressure Steel Unthreaded Pipe Flanges

Bolt two flanges of the same size together with a gasket to create an access point in a pipe line.

Low-Pressure Steel Threaded Pipe Flanges

Low-Pressure Steel Threaded Pipe Flanges

These flanges are for low-pressure applications in noncorrosive environments.

Low-Pressure Galvanized
Steel Threaded Pipe Flanges

Low-Pressure Galvanized Steel Threaded Pipe Flanges

The galvanized finish on these Pressure Class 150 flanges provides fair corrosion resistance.

Medium-Pressure Steel Threaded Pipe Flanges

Medium-Pressure Steel Threaded Pipe Flanges

With better strength than our low-pressure steel flanges, these are for use in medium-pressure applications.

Medium-Pressure Galvanized
Steel Threaded Pipe Flanges

Medium-Pressure Galvanized Steel Threaded Pipe Flanges

Also known as Pressure Class 300 flanges, these medium-pressure flanges have a galvanized finish for fair corrosion resistance.

High-Pressure Steel Threaded Pipe Flanges

High-Pressure Steel Threaded Pipe Flanges

Also known as Pressure Class 1500 steel flanges, these have the strength to handle high pressures.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)