Abstract
$\textbullet$ The modern duplex steel 2205 can be a cost effective solution compared to standard austenitic stainless steels. $\textbullet$ 2205 offers a welded construction with very high corrosion resistance as well as high strength. $\textbullet$ The steel can be welded with high productivity welding procedures. $\textbullet$ Due to the possibility of reduced weld preparation and welding associated with reduced wall thickness, the total welding costs co be decreased further.