- steel ball/grinding ball/hot-rolled steel ball/grinding
- 2017-01-08 14:23
- The company has advanced hot-rolled steel ball production lines and heat treatment line, the production of hot-rolled st
- best manufacturer of griniding steel ball
- 2017-01-08 14:23
- Parameters of hot rolled steel ball:1. The overall high hardness: surface hardness of 57-67 HRC, volume hardness of 56-6
- 20mm high hardness steel ball
- 2017-01-08 14:23
- Parameters of hot rolled steel ball:1. The overall high hardness: surface hardness of 57-67 HRC, volume hardness of 56-6