... We can supply various standard and material flanges FLANGE:WELDING NECK ,SLIP ON ,BLIND ,PLATE,THREADED,LAPPED ,SCREWDE,SOCKET WELDING ... :RUST PROOF OIL,YELLOW PAINT,GALVANIZED ,BLACK.PACKAGE:PLYWOODEN CASE PACKAGE,,WOOD PALLET PACKAGE6:Remark:1)GOST 12820:PLATE FLANGEGOST ... 12821 :WELDING NECK FLANGE2)ANSI B 16.5 :WELDING NECK ,SLIP ON ,THREADED,LAP JOINT,SOCKET ...