... . Size: DN15-DN2500. ASTM a182 f316l flanges The specification is as follows:1-American Standard:ANSI B 16.5, ASTM, ... UNI2276, 2277, 2278, 6084, 6089, 6090, 2544, 2282, 6091-6093;EN1092, PN6, PN10, PN16, PN25, PN40, TYPE1, TYPE2, TYPE5, TYPE12, ... (DN2000;)Type: Welding Neck Flanges, Slip-on Flanges, Blind Flanges, Threaded Flanges, Lap-Joint Flanges, Socket Welding Flanges;OD Size: 1/2 inch -40 inches; ...