... 18,P: 0.05 max,S: 0.05 max. High Chromium Alloyed Cast Grinding BallSpecificationφ12,φ15,φ17,φ20,φ25,φ30,φ40 ... per yearPackagingBag or steel drumDelivery TimeWithin 30daysUsageThe GUAN WANG High Chromium Alloyed Cast Grinding Ball is widely used in cement building ... , magnetic materials. Our grinding ball has the characterisitic of high hardness, good wear resistance and low breakage. The surface ...