The annual output of grinding ball is 200 thousand tons with available size dia 25mm-150mm. The high-speed production lines are all controlled by computers, which decreases manual intervention and guarantees product quality and stability. From source to finished product, we strive to manufacture high-quality and high performance grinding steel balls. 1.Material: b2, b3, bu 2.Surface hardness: hrc58-65hrc, volume hardness hrc56-63. 3.The impact toughness of our grinding balls is more than 18 j / cm2. 4.The actual broken rate
