Low chrome cast balls Size: 20mm-120mm Hardness: HRC45-55; Chrome content: 1-3.5%
Located in the scenic Zhangqiu city, Shandong Pronvince, and with the 309 state highway nearby, Jinan Jinchi Construction Materials Company Limited is one of the biggest and most specialized foundry....
High chrome cast balls Size: 20mm-120mm Hardness: HRC58-65; Chrome content: 11-14%
Forged steel balls Size: 20mm-150mm Hardness: HRC55-65 Chemical elements: C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S & P: 0.04Max; Cr: 0.25Max.