Steel Pipe and Fitting, Valve, Manhole Cover manufacturer / supplier in China, offering 8 Inch Carbon Steel Wcb Non Rising Stem Double Flanged Gate Valve Class 300, 8 Inch Carbon Steel Wcb Non Rising Stem Double Flanged Gate Valve 150lb, CF8 OS&Y Stainless Steel SS304 Flange End Gate Valve 300lb and so on.