1.steel flange for flange pipe manufacture 2.1/2'' to ... 5.ISO,API,CE Steel flange for flange pipe manufacturer 1. Material: stainless steel,alloy steel,carbon steel 2. Size range: ... 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 S32760 ...