... refractory, ceramic and abrasive area, such as making vitrified bonded grinding wheels, resin bonded tools, to process cast iron, hard alloy ... speed steel. As loose grains, it is widely used for polishing none-metal material like ceramic, glass, stone, agates, jades and jewels ... :2006 or ISO 8486-1. Green Silicon Carbide / GC-GPA for vitrified bonded grinding wheel