Malleable Iron Pipe Fittings, Grooved Pipe Fittings, Valve manufacturer / supplier in China, offering Kanaifu Grooved Ductile Iron 22.5 Degree Pipe Fitting Elbow for Fire System, Kanaifu Ductile Iron Casting Iron Grooved Hot-DIP Galvanized Water Fire Fighting Pipe Fitting, Kanaifu Malleable Iron Hot-DIP Galvanized Water Pipe Fitting 1" 2" 4" Nipple and so on.