zhangqiu city runya forging steel ball
forged ball, steel ball, grinding ball, grinding media ball, media ball, Manufacturer and Supplier - China
1.even hardness 2.unbreakable 3.grinding resistant 4.high impact value 5..Low breakage and wear rate 6.Steady performance 7.size: 20mm-150mm HRC: 55-65 83:grinding resistant 9.good wear-resistance 10...lower price - Update: 2011-06-08