FEPA P grit,brown aluminum oxide grain for producing high quality sanding belt,sanding paper,sand cloth, ... is one type of non-calcined Brown Fused Aluminium Oxide grain for coated abrasives application, the grain shape is very sharp, the strip ... ):240, 280, 320, 360, 400, 500, 600, 800, 1000, 1200. Grain Size Distribution :Upon ANSI B74.18-2006, FEPA-standard 43 ...