Cast Iron Valve, Cast Steel Valve, Ball Valve manufacturer / supplier in China, offering China ISO2531 En545 En598 Ductile Iron Pipe Fitting Flanged Socket for Water Pipeline Supply, Ductile Iron Flange Adapter with Pn10/16 Coupling for Ductile Iron Pipe Fitting, as Customized Ductile Iron Pipe Fittings with Pn15/25/40 for PVC Pipes for Water System and so on.