... , JIS, etcGradeSGCC, DX51D, DX53D, DX54D, etcWall Thickness2.0-4.5mmNominal Diameter (ND)6.0-150mm(1/8-6 inch)Outer ... rapidly a strong network world wide.Our company has a large rang of various assortment of steel products such as: I ... , Structure Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless Steel Pipe, Square/Rectangular Steel Tube, Light/Heavy Steel Rail and ect. It ...