... #,60#,80#,100#,120#,150#,180#,220#Micropowder:240#,280#,320#,360#,400#,500#,600#,800#,1000#,1200#,1500# 2000#,2500#,3000#,4000 ... content(%)maxAbrasives gradeSICminF.CmaxFe2O3maxgrain12-80980.200.60.002390-150970.300.80.0021180-220970.301.20.0018micropowder240-4000960.351.35—Refractory gradeGroup ...