... lj,ff flanges,etc. 3.Fast Delivery 4.comp flat face blind flange With high tensile strength, these JIS standard ... stainless steel flangesare available with a raised face and back ups for easy installation. Resistant to corrosion, these ... , PN 400Flange Facing Types:Flat Face (FF), Raised face (RF), groove (G), female(F), ring joints face(RJ)Surface treatment Transparent oil, ...