Pipe Fittings are a collection of all different kinds of fittings used in commercial and residential use. Pipe Fittings include bushings, couplings, elbows, and tees. All of these different pieces come in a range of materials such as copper, PEX, cast iron, and ABS. With so many different types and styles of Pipe Fittings, you are bound to find the correct one for your installation.