... ,galvanized We can supply various standard and material flanges FLANGE:WELDING NECK ,SLIP ON ,BLIND ,PLATE,THREADED,LAPPED ,SCREWDE,SOCKET ... :Remark:1)GOST 12820:PLATE FLANGEGOST 12821 :WELDING NECK FLANGE2)ANSI B 16.5 :WELDING NECK ,SLIP ON ,THREADED,LAP JOINT,SOCKET ... our products have been exported to customers all over the world ,such as Korea,Russia,coutries and regions in Middle East ...