... , Cr: 4.0-8.0,P: 0.1 max,S: 0.1 max. Medium Chromium Alloyed Cast Grinding BallSpecificationφ12,φ15,φ17,φ20 ... ,φ25,φ30,φ40,φ50,φ60,φ70,φ80,φ90,φ100,φ110NameMedium Chromium ... per yearPackagingBag or steel drumDelivery TimeWithin 30daysUsageThe GUAN WANG Medium Chromium Alloyed Cast Grinding Ball is widely used in cement building ...