... delivery flange 5.ISO,API,CE Stainless steel flange 1. Material: stainless steel,alloy steel,carbon steel 2. Size range: FROM 1/ ... 316L, WP321, WP347, WPS 312545 Duplex$super duplex stainless steel ASTM A 815 UNS S31803, UNS S32750, UNS S32760 ... .Remark:Specialized NACE & HIC Fittings for Off-Shore Applications Production Facility Certificate: Package: stainless steel flange for pipeline joint flange