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reliable and cheap casting grinding media steel ball mould 40mm high chrome cast grinding steel balls

reliable and cheap casting grinding media steel ball mould 40mm high chrome cast grinding steel balls

140MM Casting Grinding Iron Ball For Cement and Mine 1.Features of Casting Grinding Ball 1) High Hardness : surface hardness of casting balls is to 60-68 HRC and volume hardness of foundry steel balls is to 60-63 HRC; 2) High Impact Toughness : the impact toughness of high chrome grinding media is more than 12 J/cm2; 3) Low Broken Rate : the actual broken rate is not higher than 1%; 4) Wear-resistant : the grinding lost of chrome steel balls …

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