Hot rolled steel round bar Q345B, 304,316,20Cr,40Cr,20CrMo,35CrMo,42CrMo Wide supply range with qualified product Hot ... rolled steel round bar Q345B, 304,316,20Cr,40Cr,20CrMo,35CrMo,42CrMoProduct introduction1. Diameter: 25-480mm2.Length: normally as ...