Casing Pipe, Seamless Steel Pipe, High Pressure Boiler Tube manufacturer / supplier in China, offering Factory Price API Spec 5L ERW Welded Steel Tube Psl1/Psl2 X42ms, High Carbon Steel Plate Q235/Q345 Hot Rolled Plate Carbon Steel Sheet, Grade X52, X56, X60, X65, X70 Line Pipe API 5L Carbon Steel Seamless Tube and so on.