alumina abrasive powder 1.excellent quality 2.Competitive price 3. ... F16, F24,F36,F46 F60,F80,F120,F180,F220, for refractory: sand in group size :0-1mm, 1-3mm ... , 0-5mm,0-10mm, 0-25mm .. Model: WA Chemical compositions Physical propertiesItemsValue of specification (%) ItemsPropertyAl2O3 99.55min ColorWhiteSiO2 0 ... of magnetic substance0.0023%max... WFA alumina abrasive powder for polishing and blasting