1.Forged grinding balls Our products range from 20mm to 150mm, 1 inch to 6 inch, and we can also offer all size of products according to clients demand. 2.Features: 1) forged grinding ball has high hardness: surface hardness to 58-65hrc, volume hardness of 57-64hrc 2) impact toughness high: impact toughness more than 12j / cm2. 3) broken rate is low: the actual broken rate is not higher than 0.5%. 4) loss of forged grinding ball round rate is low. 5) dropping test in 8m high tester for more than 20, 000 times.
