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Trade Assurance Ball Mill For Gold

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Forged steel grinding balls for gold mining and cement coal ball mill tsf20 to tsf150 - taishan products made in china, china manufacturer. forged steel grinding balls for gold mining and cement coal ball mill description 1.production process forged or rolling 2.material 45 steel,60mn steel,65mn steel,b2 steel,b3 steel,b6 steel. 3.surface hardness 50-68hrc 4.diameter 50mm2.00 inch 5.heat

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