Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering P235gh En10216 Seamless Steel Pipe for Boiler Systems and Pressure Equipment, En1092-1 Pn16 Carbon Steel Flange, Oil & Gas Pipeline Plate Flange, ASME B16.5 B16.47 304 316 Plate RF Stainless Steel Flange for Oil Gas Chemical Pipeline and so on.