cast iron grinding balls, cast iron grinding balls ...
Compare. 140MM Casting Grinding Iron Ball For Cement and Mine 1.Features of Casting Grinding Ball 1) High Hardness : surface hardness of casting balls is to 60-68 HRC and volume hardness of foundry steel balls is to 60-63 HRC; 2) High Impact Toughness : the impact toughness of high chrome grinding media is more than 12 J/cm2; 3) Low Broken Rate ...