Steel Pipe, Steel Tube, Welded Steel Pipe manufacturer / supplier in China, offering BS1387 DIN Class B Carbon Steel ERW Welded Round Hollow Section DN50 Hot-DIP Galvanized Scaffolding Pipe, Mild Carbon Steel Pipe Hot Dipped Galvanized Zinc Coating 300G/M2 Hot Rolled Seamless Structural Pipe, ASTM Standard Grade B ISO 9001 Certified Hot Rolled Seamless Carbon Steel Pipe 6m Fluid/Gas/Oil Applications Youfa Brand and so on.