... ,PN25,PN40,PN63,PN100,PN160,PN250,PN320,PN400.Customized flanges Flange Facing TypesAmerica Series:Flat face(FF),Raised face(RF),Tongue ... B2220 FlangesJIS B2221 FlangesASME FlangeUNI FLANGEEN 1092-1 FLANGEHot Dip Galvanized Flange, ASTM A105, 6 Inch, 150 LB, ASME B16.5, RF ... 3 Inch, Pressure Class 300, API and ANSI StandardsQuality Interface Flange, ASTM A182 F304, PN16 (150 LB), DN50 (2 Inch), ...