1.brown aluminum oxide P grit 2.produce sanding cloth, abrasive paper, ... Description:AP-17 It is one type of non-calcined Brown Fused Aluminium Oxide grain for coated abrasives application, the grain ... 0.0076%Macrogrit Sizes Available (P):12, 16, 20, 24, 30, 36, 40, 50, 60, 80, 100, 120, 150, 180, 220 ... -standard 43-1:2006 or ISO 6344-2: 1998 BFA brown aluminum oxide