ASTM A105 Pipe Caps | McMaster-Carr

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140 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.

High-Pressure Iron and Steel Threaded Pipe Fittings

These fittings can stand up to high-pressure applications. Use them in noncorrosive environments.

High-Pressure Galvanized
Steel Threaded Pipe Fittings

A galvanized finish gives these fittings better corrosion resistance than our plain steel high-pressure fittings. Also known as Pressure Class 3000 fittings.

Extreme-Pressure Steel Threaded Pipe Fittings

The strongest steel fittings we offer, these can withstand extreme-pressure applications.

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.

High-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn't need to align perfectly to the pipe. Slide the pipe into the socket and weld.

High-Pressure Steel Unthreaded Pipe Flanges

Forged for extra strength, these heavy duty unthreaded flanges can withstand high-pressure applications.

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Also known as Pressure Class 6000 fittings, these heavy duty forged fittings are the strongest steel fittings we offer.

Extreme-Pressure Steel Unthreaded Pipe Flanges

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

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How to Identify and Measure Fittings

Iron and Steel Pipe and Pipe Fittings

High-Pressure Iron and Steel Threaded Pipe Fittings

High-Pressure Galvanized
Steel Threaded Pipe Fittings

Extreme-Pressure Steel Threaded Pipe Fittings

Low-Pressure Steel Unthreaded Pipe Flanges

High-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

High-Pressure Steel Unthreaded Pipe Flanges

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Extreme-Pressure Steel Unthreaded Pipe Flanges

How to Identify and Measure Fittings

Iron and Steel Pipe and Pipe Fittings

High-Pressure Iron and Steel Threaded Pipe Fittings

High-Pressure GalvanizedSteel Threaded Pipe Fittings

Extreme-Pressure Steel Threaded Pipe Fittings

Low-Pressure Steel Unthreaded Pipe Flanges

High-Pressure Socket-ConnectSteel Unthreaded Pipe Fittings

High-Pressure Steel Unthreaded Pipe Flanges

Extreme-Pressure Socket-ConnectSteel Unthreaded Pipe Fittings

Extreme-Pressure Steel Unthreaded Pipe Flanges

High-Pressure Galvanized
Steel Threaded Pipe Fittings

High-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings