Introduzione a Carbon Steel Pipe e accessori
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Module 4: Carbon Steel Pipes and Fittings

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Introduzione a Carbon Steel Pipe e accessori

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Carbon Steel Pipe and Fittings
Steel pipes have been used in the plumbing industry for more than a century. Today, steel pipes are used for hot and cold water distribution, steam and water heating systems, gas and air piping systems, and drain and vent systems.

Manufacturers can create three basic kinds of steel: carbon steel, low alloy steel, and high alloy (stainless) steel.

The term carbon steel is often used to avoid confusion with stainless steel.

Carbon Steel
Carbon steel has up to 1.65 percent manganese or small quantities of silicon, aluminum, copper, and other elements.

Manganese helps prevent brittleness and improves strength, hardness, and flexibility.

Types of Carbon Steel
The two common types of carbon steel pipe are black steel pipe and galvanized pipe.

Click on each type of carbon steel pipe to know more:
Black Steel Pipe
Black steel pipe, which gets its color from the carbon in the steel, is most often used as gas or air-pressure pipe. Because it is not highly resistant to corrosion, black steel pipe should only be used in applications where corrosion will not affect its uncoated surface.

Galvanized Pipe
Galvanized pipe is a steel pipe that has been electroplated with molten zinc. This protects the pipe surface from abrasive, corrosive materials and gives the pipe a dull, grayish color. Galvanized pipe is more resistant to corrosion than black steel pipe, and is commonly used for venting systems.

Carbon steel pipe can be threaded or grooved, but threaded pipe is more common.

Steel pipe is typically manufactured with threads on both ends. It is usually connected with threaded fittings. The length of pipe that gets screwed into the fitting is called the thread engagement.

The standard thread used on pipe is V shaped, with an angle 60 degrees. The taper is 1/32 inch per inch of length.


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