Cast Iron Valve, Cast Steel Valve, Ball Valve manufacturer / supplier in China, offering UL/FM Appproved Ductile Iron Grooved Fittings mechanical Tee with Thread Outlet, FM UL CE Approved Ductile Iron Fittings Reducing Threaded and Grooved Tee, Ductile Iron Rigid Coupling Grooved Pipe Fittings and so on.