Coupling is a type of Pipe Fitting that joints the pipe sections while maintaining the integrity of the pipes. Stainless Steel Coupling Pipe Fitting is also used to repair leaking or broken pipes and to change the pipe size. Pipe Couplings Fitting is very short in length & widely uses in the piping and plumbing industry. This can increase or reduce the internal diameter to join pipes of different sizes. The coupling Fittings body is made from the same or similar materials as the pipes it joins. It has a great degree of aluminum, Cast iron, Stainless Steel, carbon steel, copper alloys, polyurethane, Hyrtel, and rubber.