hot rolling grinding steel balls for sliver mine

1. commodity:
    steel balls

2. dia:
    25-150mm

3.high hardness:
    58-67HRC
4.impact strength:
    exceed 12J/cm2
5.no breakage
6.good wear resistance

7.use:
    gold mine, silver mine,copper mine, iron mine, power station, cement plant, and      chemical industry.
8.packing:
     woven bag or iron drum