40mm 60mm B2 Material forged grinding ball media,
a. Grinding steel ball material: The high quality round steel. b. Grinding steel ball application : 1) Cement Plant 2) Coal Mining, Gold Mining,Silver Mining, Copper Mining 3) power stations 4) Chemical engineering . Raw Material: Strict quality control of steel material from LAIWU STEEL FACTORY GROUP, the Biggest factory group in North of China.