Blind Flange 6",Carbon Steel 1.from 1/2'' to 24'' 2. ... ,SGS,BV,etc FLANGESProduction NameSlip-on welding flange;welding nece flange;socket welding flange;threaded flange;lapped flange;blind ;spectacle blind,etc.Size RangeFrom ½” up ... , F7, F9, F11, F12, F22, F913 SPECIAL ALLOYInconel 600, Inconel 625, Inconel 718, Inconel X750, Incoloy 800, Incoloy 800H, Incoloy 825, Hastelloy C276, Monel ...