... stone Description:GC-GPA is a green, friable, medium bulk density silicon carbide abrasive grain. To get this kind of grains, we ... ingots, separate the magnetic material, and sieve the grains carefully to get a complete range of grit sizes.Applications:GC-GPA can be ... such as making vitrified bonded grinding wheels, resin bonded tools, to process cast iron, hard alloy, tatium alloy and high speed ...