Welcome to oriental casting and forging(shandong) co., ltd. I, mr. Wang is glad to serve you Description: As one of the biggest manufacturers and exporters of grinding balls in china, we can produce several kinds of grinding ball 100000 ton annual and exports to more than twenty countries and areas such as japan, korea, canada, america, chile and south africa and has obtained a high reputation from the customers. 1. Passed the swiss sgs iso9001 international quality certification system And iso14001 international environment certification system. 2. Good quality: high hardness, good wear resistance, no breakage, even wearing. 3. Applied field: mines, cement plants, power stations, chemical industries etc. 4. Stable supply and sales year-round make us can be your good supplier. Product description: Specifications: Forged steel grinding balls Size: 20mm-150mm Brand material impact test endurance test surface core Ak.J/cm2 times(5m) (min) (min) Dt-2 60mn 13min 10000min 58 50 Dt-3 65mn 15min 12000min ≥60 50 Dt-4 b2 17min 12000min ≥60 52 Brand material c mn si cr s p Dt-2 60mn 0.57-0.65 0.7-1.0 0.17-0.37 0.25 0.035max 0.035max Dt-3 65mn 0.62-0.70 0.9-1.0 0.17-0.37 0.25 0.035max 0.035max Dt-4 b2 0.70-0.85 0.7-0.8 0.17-0.37 0.2-0.7 0.035max 0.035max If you are interested in my product, please send me your detailed information such as your drawing or detailed specifications, chemical composition requirement etc. And you will get our quickly reply 1bag/ton