... , Africa, Oceania, Mid East, Eastern Asia, Western alloy steel round bar 1. hot rolled ordinary carbon round barSize: 10mm-300mm,Material: Q235 2. hot ... -300mm,Material: 10#--45#, S20C, S45C 3. hot rolled lower alloy round bar Size: 12mm-300mm,Material: Q345 4. hot rolled ... alloy round bar Size: 12mm-300mm,Material: 20Cr-40Cr, 20Mn-65Mn, 15CrMo- ...