... stainless steel flange 2.1/2'' to 60'' flange 3.high quality flange 4.short delivery flange 5.ISO,API,CE Stainless steel flange 1. Material: stainless steel,alloy steel,carbon steel ... 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, UNS ...