... Mid East, Eastern Asia, Western alloy steel round bar 1. hot rolled ordinary carbon round barSize: 10mm- ... 300mm,Material: Q235 2. hot rolled good-quality round bar Size: 12mm-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 ...