1.steel pipe flange,ansi flange,tube flange for pipe joint 2.1/2'' to 60'' ... 5.API,CE,ISO flange steel pipe flange,ansi flange,tube flange for pipe joint 1.Products Items:Slip ... flange;blind ;spectacle blind,etc.2. Material: stainless steel,carbon steel,alloy steel 3. Size range: From ½” up to 60” ... WP321, WP347, WPS 312545 Duplex$super duplex stainless steel ASTM A 815 UNS S31803, UNS S32750, UNS ...