What are some popular materials used for american pipe fittings?

Some of the most popular materials used for American pipe fittings include:

Steel

Carbon steel is commonly used for pipe fittings like couplings, elbows, tees and threaded joints. It's budget-friendly and durable.

Cast iron 

A rigid material often used for underground municipal pipelines as well as industrial and commercial plumbing systems. Resistant to corrosion.

Ductile iron

A variation of cast iron that has a higher tensile strength, making it less brittle. Commonly used for underground pipeline fittings.

Copper

Valued for its malleability and resistance to corrosion, copper pipe fittings are used in potable water systems and hydronic heating.

Brass 

Similar to copper in its ability to withstand corrosion, brass fittings are also used in domestic plumbing, especially older homes.

Galvanized steel

Steel coated in zinc to prevent corrosion from moisture. Used in exposed applications like drainage pipes.

Plastic

Most common plastics for pipe fittings include PVC, CPVC and PE. Affordable option that is lighter weight than metal.

So carbon steel, cast/ductile iron, copper and plastic are among the most widely used materials for standard American threaded pipe fittings in residential and commercial use.