Our factory manufacture and export Forged Steel Grinding Ball as follows: Specifications: 1) Diameters: Dia. 20 - 150mm 2) Hardness: HRC 55-65 3) Chemical elements(%): C: 0.48-0.85, Si: 0.15-0.37, Mn: 0.7-1.0, P: 0.035 MAX, S: 0.035 MAX Characteristics: A) High hardness B) No breakage C) Even wearing D) Good wear resistance Applied fields: A) Mines B) Cement plants C) Power stations D) Chemical industry Outer packing: Container bags, Steel drums