... 4.For Abrasives / Refractoy Brown Fused Alumina For Refractory Cement Industrial Description: * Its chemical composition consists mainly of Al2O3 (94.5 ... ground ♦ Producing mold of precision casting Grit Size Available (P, F): P series: P8, P10, P12, P16, P24, P30, P36, P40 ... , P400, P500, P600, P800, P1000, P1200, P1500, P2000, P2500, P3000 F series: F4, F8, F10, F12, F14, F16, F22, F24, F30 ...