Casting Method By using the casting method, we get the chance to produce and transport molten steel grinding balls. We offer balls shipping for a ore quality crushing and mill balls use. Casting balls are made in special forms by casting method, which ensures high accuracy even in large-diameter balls. It can reach a maximum permissible mm deviation depending on the diameter of casting ball. After the final cast iron cleaning process balls move in a special environment. Processed balls have flat surface. Cast grinding balls are made of GOST 977 strength for mill balls, also it’s possible custom-made grinding balls. Casting balls diameter is 40 mm -120 mm, and can increase according to request. The monthly output reaches up to 1000 tons.