Carbon hot rolled flat steel bar 1.Standard:ASTM 2.Steel Grade: SS400,ST37-2,A36,S235JRG1,Q235,Q345 etc. 3.High quenching Carbon hot rolled flat steel barStandard ... :ASTMSteel Grade: SS400, ST37-2, A36, S235JRG1, Q235, Q345 etc. FLAT BARSTANDARD SECTIONAL DIMENSION ... .35x76.20 mm6M 9M 12MPacking:In bundles. Carbon hot rolled flat steel bar