high purity green silicon carbide making abrasive grinding wheels making precise sharpening stone Description:GC-GPA is a green, friable, medium bulk density silicon ... tools, to process cast iron, hard alloy, tatium alloy and high speed steel. As loose grains, it is widely used for ... -2001, FEPA-Standard 42-1:2006 or ISO 8486-1. High Purity Green Silicon Caribide