ALLSTAR STEEL GRINDING BALL LIMITED , as one of the bigger manufacturer and exporter of grinding balls in China, the capacity is 50, 000 MT annual and exporting to Australia, Korea, Japan, Canada, South Africa etc more than twenty countries and areas, we had obtained the certificate of ISO9001-2000, ISO14001. We mainly produce the following kinds of grinding balls, xxxxx steel grinding balls Size: 20mm-150mm Hardness: HRC50-65 Chemical elements: C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S & P: 0.04Max; Cr: 0.25Max. xxxxx steel balls (XTAB-1) Size: 20mm-150mm Hardness:HRC58-65 Chemical elements: C:0.7-0.9, Si:0.65-1.00, Mn:0.70-1.25, P/S:0.04Max, V:0.05-0.12 Applications: 1) Mines 2) Cement plants 3) Power stations 4) Chemical industry 3.High chrome cast balls Size: 20mm-120mm Hardness:HRC58-65; Chrome content:11-14% 4.Low chrome cast balls Size: 20mm-120mm Hardness:HRC45-55; Chrome content:1-3.5% Applied areas: cement building materials, metal mining, coal paste thermal powerplants, chemical engineering, ceramic coating, light industry, magnetic materials If you are intrested in our products send me a enquiry anyway.