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cement mill grinding cast iron mill ball

Dia 17-150MM High Chrome Cement Mill Casting Grinding Iron Media Ball . 1.Feature 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%.

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