Huzhou Nickel Alloy Special Materials Co., Ltd.
Super duplex and duplex stainless steels both have the same three metals in common, these metals are present at different levels. Duplex consists of 22% chromium, 5-6% nickel and 3% molybdenum. Super duplex, meanwhile, contains 25% chromium, 7% nickel and 4% molybdenum.
Special Piping Materials supplies only the highest quality Super Duplex, available as welded or seamless pipes, forged fittings, bars and flanges. Our network of offices around the world guarantee the best lead times and availability wherever your project.
Heat exchangers, tubes and pipes for processing gas and oil
Pipes in processes containing chlorides
Cargo tanks – piping for chemical tankers
Shafts, rotors and hydraulic lines
Super Duplex has all the benefits of other duplex steels, specifically the strength benefits of their biphasic structural composition of equal parts austenitic and ferritic stainless steel. This microstructure makes all duplex steels around twice as strong as regular single structure ferritic or austenitic steels, but Super Duplex has a higher chromium and molybdenum content, giving it considerably increased resistance to corrosion than its counterparts.
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