MSS SP-25 Pipe Flanges | McMaster-Carr

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270 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.

Low-Pressure Steel Threaded Pipe Flanges

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

Low-Pressure Steel Threaded Pipe
Flanges for Low Temperatures

Use these Pressure Class 150 pipe flanges in low-pressure lines where temperatures drop down to -40° F.

High-Pressure Steel Threaded Pipe Flanges

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

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.

Extreme-Pressure Steel Unthreaded Pipe Flanges

For excellent strength in extreme-pressure applications, choose these heavy duty Pressure Class 1500 flanges.

High-Pressure Stainless Steel
Unthreaded Pipe Flanges

Use these heavy duty forged flanges for high-pressure applications.

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How to Identify and Measure Fittings

Metal Pipe and Pipe Fittings

Low-Pressure Steel Threaded Pipe Flanges

Low-Pressure Steel Threaded Pipe
Flanges for Low Temperatures

High-Pressure Steel Threaded Pipe Flanges

Low-Pressure Steel Unthreaded Pipe Flanges

Extreme-Pressure Steel Unthreaded Pipe Flanges

High-Pressure Stainless Steel
Unthreaded Pipe Flanges

How to Identify and Measure Fittings

Metal Pipe and Pipe Fittings

Low-Pressure Steel Threaded Pipe Flanges

Low-Pressure Steel Threaded PipeFlanges for Low Temperatures

High-Pressure Steel Threaded Pipe Flanges

Low-Pressure Steel Unthreaded Pipe Flanges

Extreme-Pressure Steel Unthreaded Pipe Flanges

High-Pressure Stainless SteelUnthreaded Pipe Flanges

Low-Pressure Steel Threaded Pipe
Flanges for Low Temperatures

High-Pressure Stainless Steel
Unthreaded Pipe Flanges