JINAN XINTE CASTING AND FORGING CO.,LTD is one of the largest factory specialized in producing forged grinding steel balls and cast grinding steel balls in China. The company has passed ISO9001: 2000 quality system authentication. Our factory was established in 1971. There are180 employees now, covering an area of 20000 square meter. Our annual product of grinding balls is about 50000 ton. We mainly export our steel balls to Japan, Korea, Malaysia, Philippine, Canada, South-Africa, Chile etc more than 20 countries and areas. The major character of our Grinding Balls is that: high hardness, no breakage, no wearing, lower price. It is mainly used in cement plants, mines, power stations etc. The hardness and chemical composition of our grinding balls as follows: 1. Forged steel balls Size: 20mm-180mm Hardness:HRC55-65 Chemical elements:C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S: 0.04Max; P: 0.04Max; Cr: 0.25Max. 2. Forged steel balls (RCAB-1) Size: 20mm-180mm 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 3. High chrome cast balls Size: 20mm-150mm Hardness:HRC58-65; Chrome content:11-14% 4. Low chrome cast balls Size: 20mm-150mm Hardness:HRC45-55; Chrome content:1-3.5% 5. Middle chrome cast balls Size: 20-150mm