• Model NO.：20-150mm
• Delivery：Prompt
• Packaging：Steel Drum , Container Bag
• Drop Test Times：More Than 20000
• Diameter：20-150mm
• Hardness：55HRC-67HRC
• Field：Mine, Cement, Electric Power Plant
• Transport Package：Bundle
• Specification：Dia. 20-150mm
• Trademark：HM
• Origin：China
• HS Code：73261100
• Production Capacity：150, 000 Mt,Year

Are you looking for the new manufacturer of grinding balls? Which one will you choose?
Please take some time to get to know our products and our company.
If you choose us, I think you will not be disappointed.
Our factory manufacture and export Forged Steel Grinding Ball for ball mill as follows:
1.Feature:
        The forged steel grinding ball is excellent in surface quality, toughness, and resistance to impact and abrasion. It won't crack and lose circularity easily.
1) In general, forged grinding steel ball has high hardness: Surface hardness to 55-67 HRC, volume hardness of 56-64 HRC
2) impact toughness high: Impact toughness more than 12 J / cm2.
3) broken rate is low: Peel fragmentation resistance property of over 20000 times. The actual breakage rate not greater than 1% and close to 0. Nominal Diameter(mm)Dimensional Tolerance(mm)Roundness %Φ20±2  ≤6Φ25±2   ≤6Φ30±2   ≤5Φ35±2   ≤5Φ40±2   ≤5Φ50+3,-1   ≤4Φ60+3,-1   ≤4Φ70+3,-1   ≤4Φ75+3,-1   ≤4Φ80+3,-1   ≤4Φ90+4,-2   ≤4Φ100+4,-2   ≤4Φ120+4,-2   ≤4Φ125+4,-2   ≤4Φ130+4,-2   ≤4Φ140+4,-2   ≤4Φ150+4,-2   ≤4