UNS S31500/ DIN 17458 duplex steel pipes and tubes in Spain are engineered to deliver exceptional mechanical strength and resistance to corrosion in demanding industrial environments. With a balanced microstructure of austenite and ferrite, this duplex stainless steel grade is widely used in sectors such as oil & gas, desalination, chemical processing, and structural applications. In Spain, the demand for high-performance duplex steel tubing has steadily grown due to its excellent performance under high pressure and harsh environmental conditions. This article explores the key features, benefits, and applications of UNS S31500/ DIN 17458 duplex steel pipes and tubes, along with the top suppliers in the Spanish market.