Duplex steel welded pipe is made from two different types of stainless steel, also known as austenitic steel and ferritic steel. Duplex steel is a combination of two types of steel that offers greater strength, corrosion resistance, and better weldability than either steel alone. Duplex steel welded pipe is used in many industries, including the chemical, petrochemical, marine and food processing industries. They are used in a variety of applications including piping, pressure vessels, boilers, storage tanks and condensers. Duplex steel welded pipe is also used in the construction industry for a variety of purposes such as structural framing, piping systems, and other general manufacturing purposes.