Hot Rolled(Forged)Grinding Media Mill Steel Balls - Features and Advantages from Suzhou Gaincin Machinery Co.,Ltd(GAINCIN.com).Concentrating on wear-resistant steel grinding material for over 15 years, Gaincin Brand steel grinding ball is excellent in surface quality, hardness, and resistant to impact and abrasion. It won\'t crack and lose circularity easily. 1) High Hardness: Gaincin forged grinding steel ball has high hardness: surface hardness can reach to 56-68 HRC, volume hardness 56-65 HRC 2) High Impact Toughness: impact toughness is more than 12 J / cm2. Raw Material As we know, the quality of forged grinding piece depends on the material by 80%. Our products use high-quality round steel from national large-scale steel mill to insure the quality of our products. Forged Steel Ball Products: Our products range from 20mm to 150mm, 1 inch to 6 inch, and we can also offer all size of products according to clients\' demand. Packing Instruction: Strong Nylon Bag: Avalible Bag: 500kg; 1000kg Strong Metal Drums/Barrels: Available Drum/Barrel:200LTR,850kgs to 950kgs/Drum or Two Drums/Barrels Stand On one iron pallet and tightly being banded by iron strips around the drums/barrels. The Production Line And Equipment: The self-developed automatic steel grinding ball production line is our qualified product, and it has won Chinese invention patent. It uses electric furnace instead of conventional coal combustion method, and the rotary cutting technique replaces traditional air hammer, thereby improving production efficiency by 30 times or even higher. Testing: Each step of our product will be tested strictly. We take charge of our work and, of course , our products.