galvanized steel pipe and tube 1.size: see table 2.thickness(mm)0.5~5.0 3.ISO9001/ CE /SGS / ASTM

ERW WELDED galvanized steel pipe and  tube

thickness(mm)0.5~5.0 

  ISO9001/ CE /SGS / ASTM

Surface treatment

     1.black without surface treatment

     2.white without surface treatment

    3.hot dipped galvanized

    4.zinc-plate

    5.made with pre-galvanized steel plate