Duplex & Super Duplex Flanges manufactured by VikTech Fittings are known for excellent corrosion resistance, high strength, and superior performance in aggressive environments. Types include Slip-On, Weld Neck, Blind, Socket Weld, Threaded, Lap Joint, Orifice, and Ring Joint Flanges. Sizes range from ½” to 48” in Class 150 to 2500 as per ASME, DIN, and EN standards. Standards: ASME/ANSI B16.5, B16.47 ASTM A182 F51 / F53 / F55 / F60 UNS S31803 / S32205 (Duplex) UNS S32750 / S32760 (Super Duplex) DIN PN6, PN10, PN16, PN25, PN40 EN 1092-1, BS, IS Size Range: ½” to 48” (DN15 – DN1200) Pressure Class: Class 150, 300, 600, 900, 1500, 2500 | PN6 – PN40 Face Type: RF (Raised Face) FF (Flat Face) RTJ (Ring Type Joint) Material Options / Grades: Duplex Steel UNS S31803 / S32205 Super Duplex Steel UNS S32750 / S32760 ASTM A182 F51 / F53 / F55 / F60 Applications: Offshore Oil & Gas Platforms Marine & Shipbuilding Industry Desalination & Water Treatment Plants Chemical & Fertilizer Industry Heat Exchangers & Pressure Vessels Pulp & Paper Industry