Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Wcb API ANSI DIN JIS BS SS304 SS316 Swing Check Valve Industrial Gate Valve for Oil and Gas, ANSI B16.5 Pn16 Class1500lb RF/FF Forging Fitting Carbon/Stainless Steel Flanges, ASTM B111 C12200 C11000 Copper Tube/Copper Pipe for Plumbing, Refrigeration and so on.