Standards ASTM B564 / ASME SB564 Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc Size 1/2 (15 NB) to 48 (1200NB) Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)