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 ballsSize: 20mm-150mmHardness: HRC50-65Chemical 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-150mmHardness:HRC58-65Chemical elements: C:0.7-0.9, Si:0.65-1.00, Mn:0.70-1.25, P/S:0.04Max, V:0.05-0.12Applications: 1) Mines 2) Cement plants 3) Power stations 4) Chemical industry3.High chrome cast ballsSize: 20mm-120mmHardness:HRC58-65; Chrome content:11-14%4.Low chrome cast ballsSize: 20mm-120mmHardness: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 materialsIf you are intrested in our products send me a enquiry anyway.