... Package: Wooden cases, Pallets, Crates, Plywood cases Surface: Oil, slip-on flange:1.Standard:ANSI, DIN, JIS, BS, DIMA, UNI, EN ... : DN10-DN6004.Type:Blind Flange, Thread Flange, Slip On Flange, Welding Neck Flange, Socket Welding Flange, Lap Joint Flange5.Certificate:TUV Certificate, ISO ... product at the maxium range 50000 tons per year slip-on flange