Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd
Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd 18 Years focus on development and production of grinding media Casting quality with strength, Forging glory with integrity
Forged steel balls C45 60MN B2 B3 BU material 20-150mm grinding media balls There are four common used raw material 45# 60MN B2 B3 whold wide world ...