Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering China Factory Made ISO2531 Ductile Iron Pipe Fittings Dismantling Joint, OEM ISO 2531/En545 Ductile Iron Pipe Fittings Connector Flanged Steel Expansion Dismantling Joint, Ductile Iron Y Type Strainer Double Flange Water ASME and so on.