... steel and high carbon steel.(2)It also usually used for sandblasting, such as precious metal, the gold, crystal, the glass ... manufacturing the superfinishing stone.(3)It can be used in making the superior refractory products.0-1,1-3,3-5 ... -8mm and 180,200,240,280,320F Bacmac Aluminium Micropowder Brown Fused Alumina