GOST Flange Type:Welding Neck ,Plain Welded Size:DN15-DN2000 Coating:Galvanized,Rust-proof oil,Black/Yellow Paint GOST Flange Size rangeDN15 to DN 2000DesignPlate Flange 12820-80, Welding Neck Flange 12821-80PressurePN6, PN10, PN16, PN25, PN40MaterialCarbon Steel CT-20, Stainless Steel 304/304L, 316/316LScaling Face FF,RF,RTJCoatingrust-proof oil, cold and hot galvanizePackageSea worthy plywooden ...