Valves, Ball Valve, Gate Valve manufacturer / supplier in China, offering GB/GOST/API 6D Cast Steel Wcb Ggg-50 2′′4′′5′′6′′8′′10′′12′′ DN50/100/150/200/250/300 Dual Plate/Swing/H41/H44check Valve for Industrial Water Filter Syste, Ductile Iron/Carbon Steel/CF8 Gate Valve Wcb/Z41t-10/Rising/Concealed Stem Gate Valve for Water Treatment, Carbon Steel Z41h-16c/Wcb 2′′4′′6′′8′′10′′ DN25/50/100/200/Industry Flange Gate Valve and Butterfly/Check/Globe/Gate/Ball Valve/China Valve and so on.