... . ZINC 40-140um or 280-900g/m2 3. Strong productivity GB/T 3094 erw welded hot dip galvanized carbon mild steel production ... , ASTM A 53, EN 10210, EN 10219, JIS G 3466, GB/T 6728, BS 1387, BS 6323, IS : 3074, IS : 4923, DIN ... goods shelf and so on.Our Popular Size (Hot Sales!) GB Main Products (Specification)Rectangle pipe SpecificationThicknessSpecificationThickness20*301.2-3.0100 ...