... .good wear resistance We, Jinan Zhongwei casting and forging grinding ball Co., Ltd, established in 2000, is a leading ... which is provided with superior location and convenient transportation.Casting steel ball Specification: 1.Chemical composition: C(0.6-1.2 ... d) Chemical industry6.Outer packing: Container bags, steel drums Iron drum (850~920Kg Per Drum) Medium chrome grinding steel mill ball 130mm