Forged Grinding Balls

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 clientsã¢Ã¯Â¿Ã‚½ÃƒÃ‚¯Ã‚¿Ã‚½ 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.