DIAMETER:60--200MM,LENGTH:3-6M,HARDNESS:HRC45-60 TYPE B: DIAMETER:60-150MM,LENGTH:3-6M,HARDNESS: HRC45-60

diameter: 60-200MM, length :3-10M,hardness :45-65 chemical elements: C: 0.52-0.7,    Si: 0.17-0.37,    Mn: 0.6-1.2,    S: <0.035,      P: <0.035,     Cr: <0.04

The grinding rod