1.standard: DIN , EN1092-1 , UNI , ANSI , BS , JIS , special flanges according to buyer's drawing

2. Material : Rst 37.2, S235JRG2, C22.8, A105, P245GH, SS304, SS316
3. Type: plate, Slip-on, Welding neck , threaded, Blind and socket weld

4. Size : 1/2" ~40", DN15~DN1000