We Jinan Xinte Casting and Forging Co., Ltd is the professional manufacturer and exporter of grinding steel ball with 38 years experiences. The annual production output is 50000 metric tons. All products obtained ISO9001 Quality Certificate. Our main products are as follows: 1. Forged Grinding Steel Ball Size from dia 25mm to dia 150mm . Chemical Composition(%): C: 0.50-0.65 Si: 0.15-0.37 Mn: 0.60-1.20 Cr:0.25max S: 0.04max P: 0.04max 2. Casting Grinding Steel Ball Including high chrome, mid chrome and low chrome casting balls. Size from dia 30mm to dia 100mm . 3. Carbon steel balls Material: AISI1008-1015, AISI1055-1085 Grade: G40,G60,G100,G200,G500.G1000.G2000 Size: 1.0 -50.8mm