U.S. STANDARD ASTM Tyler Equivelant U.S. STANDARD …
25 mm inch 1.0 0.883 in 315 microns - 22.4 mm inch 7/8 0.883 in 300 microns No. 50 48 Mesh 20 mm - 280 microns - 19 mm inch 3/4 0.742 in 250 microns No. 60 60 Mesh 18 mm - 224 microns - 16 mm inch 5/8 0.624 in 212 microns No. 70 65 Mesh 14 mm - 200 microns - 13.2 mm inch 0.530 0.525 in 180 microns No. 80 80 Mesh 12.5 mm inch 1/2 - 160 microns ...