What is a pipe fitting?

A pipe fitting is any product used to connect piping systems. Common fittings in everyday use are threaded, welded, soldered, bolted (flanged), or function with compression.

Some common types of fittings include Elbows, Tees, Crosses, Laterals, Reducers (Concentric and Eccentric),  Flanges, Couplings, Unions, Bushings, Caps, Plugs, and Valves.