Seamless Duplex Steel S32205 |UNS S32205|1.4462 Pipe

Seamless Duplex Steel S32205 Pipes (UNS S32205 / W.Nr. 1.4462) are high-performance piping solutions engineered with a balanced austenitic-ferritic microstructure for superior mechanical strength and durability. As a premier manufacturer based in Fujian, China, Tengqi produces high-integrity seamless tubing that strictly complies with ASTM A790 and ASME SA790 international standards.

Our S32205 pipes feature a higher nitrogen content than standard UNS S31803, ensuring an enhanced Pitting Resistance Equivalent Number (PREN ≥ 35). This makes them exceptionally resistant to chloride pitting and stress corrosion cracking (SCC) in harsh environments. With a yield strength approximately double that of conventional 300-series stainless steels, these pipes allow for lighter wall designs and increased pressure ratings in petrochemical, marine engineering, and energy infrastructure. Through advanced cold-drawing and precision solution annealing, Tengqi guarantees optimal phase balance and a high-integrity surface finish for mission-critical applications.

"Our S32205 pipes are dual-certified to meet both S31803 and S32205 specifications, ensuring higher chromium and nitrogen levels for superior corrosion resistance."