Steel Round Bar 1)Grade:Q235,Q345,10#,20#,35#,45#,SS400,A36,ST37,ST45,ST52 A53 etc 2)Professional Manufacturere Steel Round Bar standard:GB, ASTM JISmaterial: Q235,Q345,10#,20#,35#,45#,SS400,A36,ST37,ST45,ST52 A53,SAE1010,SAE1020 DIA:150 mm min can customizedlength:6000-12000mm tolerance:+/-0.5mmProcess Art: Forged Q235 round bar