alloy steel round bar Export Markets: Southeast Asia, Africa, Oceania, 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, ...