... ., Ltd. has 10 years of experience in ball production, the products are exported to South America, Australia, South Africa, Finland, Russia, Japan ... production,just hope my data can help you to make a good select.2.The types ClassComodityChemical CompositionHRCCSiMnPSCrAGrinding Balls0.52-0650.17 ... -1.0≤0.035≤0.0350.4-0.960-65 The best forged steel grinding balls for ball mill made in China