


1) In general, forged steel ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 50-63 HRC. 2) Impact toughness high: impact toughness more than 12 J / cm2. 3) Broken rate is low: the actual broken rate is not higher than 1%. 4) Loss of grinding forged steel ball round rate is low. Our products have obtained ISO 9001---2008.