Process of forging: Cutting --forging--machine--Galv.--packing--transport 1. Type: WN flange, BL flange, SW flange,SO flange, THR'D flange, LJ flange2. Standard: ANSI,JIS,BS,DIN,UNI,AWWA,API and MSS.3. Pressure: 150#--2500#.4. Package: Seaworthy wooden cases carbon steel flange