Duplex 2205 pipe is a high-performance stainless steel pipe made from a duplex alloy containing approximately 22% chromium, 5-6% nickel, and 3% molybdenum. This composition provides a balanced microstructure of austenite and ferrite, resulting in excellent strength, superior resistance to stress corrosion cracking, and outstanding resistance to pitting and crevice corrosion, particularly in chloride-rich environments.
Duplex 2205 pipes are widely used in applications such as chemical processing, offshore oil and gas, marine environments, heat exchangers, and pressure vessels. These pipes offer twice the strength of standard austenitic stainless steels (like 304 and 316) and have good weldability and toughness. They comply with specifications like ASTM A790 for seamless and welded pipe, ensuring reliability in demanding structural and corrosive service conditions.
