Malleable fittings are usually used to connect steel pipes. Thus, malleable iron pipe fittings are used with all kinds of pipes. Malleable iron pipe fittings are the most common among malleable fittings and are available in many different types and sizes. Leyon's malleable iron pipe fittings are divided into black malleable iron pipe fittings and galvanized malleable iron pipe fittings. The galvanized malleable iron pipe fittings are also called GI pipe fittings. Compared to black malleable iron pipe fittings, it has one more process—— Painting/Galvanizing. And the pipe fittings galvanized are more shiny. Cast iron pipe and fittings are also provided by Leyon.