Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering DN50-DN2000 Ductile Cast Iron Flanged Dismantling Joints-ISO2531, DN50-DN2200 Ductile Iron Pipe Fittings Connector Flanged Steel Expansion Dismantling Joint, Dismantling Joints-Aoft05-Pn10/Pn16 China Factory Made and so on.