... flange 5.ISO,API,CE Stainless steel flange 1. Material: stainless steel,alloy steel,carbon steel 2 ... 400, Monel K500WPS 31254 S32750, UNS S32760 4 STAINLESS STEEL ASTM A403 WP304/304L, WP316/316L, WP321, ... WP347, WPS 312545 Duplex$super duplex stainless steel ASTM A 815 UNS S31803, UNS S32750, ... 400, Monel K500WPS 31254 S32750, UNS S32760 4 STAINLESS STEEL ASTM A182 F304/304L, F316/316L, F321, ...