... steel bar Standard: GB, ASTM, JIS, Material: Q195, Q235, Q345B, SS400 Specification: 20^20~300^300mm equal angle steel bar1. Item:equal angle steel ... bar2. Standard: GB, ASTM, JIS,3. Material: Q195, Q235, Q345B, SS4004. Specification: 20^20 ... .Commodity: Equal Angle Steel BarSize (mm)Tolerance (mm)Thickness (mm)Tolerance (mm)20±0.83,4±0 ...