... A: DIAMETER:60--200MM,LENGTH:3-6M,HARDNESS:HRC45-60 TYPE B:DIAMETER:60-150MM,LENGTH:3-6M,HARDNESS: HRC45-60 Our company ... etc.Detailed introduction is as follows:A type: diameter: 60-200MM, length :3-10M,hardness :45-65 chemical elements ... 035, P: <0.035, Cr: <0.04B type: diameter: 60-200MM, length :3-10M,hardness :45-65 chemical elements: C ... S: 0.035MAX, P: 0.035,MAX Cr: 0.28-0.60 Grinding Steel bars