Seamless Super Duplex Steel S32550 |UNS S32550|1.4507 Tube

Seamless Super Duplex S32550 Tubes (UNS S32550 / Ferralium 255) are high-performance piping solutions engineered with a strategic enrichment of Chromium (25%) and Copper, offering superior resistance to pitting and stress corrosion cracking (SCC). As a premier manufacturer based in Fujian, China, Tengqi produces high-integrity seamless tubing that strictly complies with ASTM A789 and ASME SA789 international standards.

Featuring a high Pitting Resistance Equivalent Number (PREN ≥ 40), our S32550 super duplex tubes provide exceptional durability in sulfuric acid, phosphoric acid, and aggressive marine environments. The addition of copper enhances its resistance to non-oxidizing acids, making it a superior choice over standard super duplex grades for chemical processing and offshore systems. Through advanced cold-drawing and precise solution annealing, Tengqi ensures every tube maintains optimal phase balance and maximum mechanical strength for mission-critical industrial applications.