grinding ball for mines,cement plants

we'd like to in introduce ourselves as a pofessional manufacturer ofhot rolledgrinding balls, our product is widely used in large scale mine, power plant and cement plant,like Codelco, AngloAmerica,Anglogold Ashanti,Barrick Gold and so on.According to most of our user's feedback, our grinding balls enjoys the advantage of great hardness from surface to core, high impact value, lowcrushing rateand would improve the productivity and cut off cost a lot. Detailed properties are as follows: 1. High whole hardness: the surface hardness could be HRC 60-65, the average volumetric hardness could be HRC 60-63, and the hardness gradient is uniform. 2. High notched bar impact strength: it is more than 17J/cm2 3. Low breakage rate: Properties for peel &breakage resistant are more than 10 times than traditional steel ball. There is almost no breakage when ball impact more than 200,000 times. Actual breakage rate is less than 1%.4. Permanent in shape: our balls won’t be out of circularity from start until finish.