Class 1500 Lb Blind Flange, ANSI B16.5 Class marked with 6 pressure levels Respectively: Class 150; Class 300; Class 600; Class 900; Class 1500; Class 2500 High-quality products Blind Flange sealing surface in the form of more types, FF, RF, MF, TG, RJ. It is the middle of the flange without holes, used to plug the pipe mouth. Materials are carbon steel, stainless steel, alloy steel. Our ...