Ball mill ball can be divided into two types: forging steel balls and casting steel balls, according to the manufacturing operation. Hebei Goldpro New Materials Technology Co., Ltd. is a one of biggest manufacturers in China, specializing in producing ball mill ball. It produces steel ball with diameter of 20 mm- 150 mm, including forged steel ball and hot rolling steel ball, used for ball mills with diameter of 1.5m- 11 m, applied for power station, ore mines, chemical, etc.