Carbon steel round bar Export Markets: Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Carbon steel round bar1. hot rolled :Q235 ,10#--45#, S20C, S45C ,Q345 Size: 12mm-300mm,Material: 20Cr-40Cr, 20Mn-65Mn, 15CrMo-42CrMo, 20Mn2-40Mn, 20CrNiMoA-40CrNiMoA, 38CrSi, 30CrMnSi, 20CrMnTi, 9CrSi, 9Mn2 5. hot rolled high speed alloy tool steel Size: 12mm-300mm,Material: W18Cr4V, M42,W6, W9 ...