Steel Pipe, Carbon Steel Pipe, Seamless Steel Pipe manufacturer / supplier in China, offering Bare Line Pipe API5l Grade X42/X60/X70 ERW Welded Carbon Steel Pipe, Supply API 5CT Oilfield Casing Drill Pipes/Steel Oil Well Drilling Tubing and Casing, Seamless Structure Beveled End Custom Diameter Cold Drawn Seamless Carbon Steel Pipe for Oil and Gas Industry and so on.