ASTM A789 UNS S32750 Bright Annealed Seamless Tube

GNEE supplies UNS S32750 seamless duplex tubes for heat exchangers, which are super duplex stainless steel tubes formed through hot piercing or hot extrusion followed by cold rolling/cold drawing and solution annealing treatment. These tubes feature a tensile strength of ≥800 MPa, yield strength of ≥550 MPa, and a pitting resistance equivalent number (PREN) of ≥42, demonstrating superior resistance to chloride pitting, crevice corrosion, and stress corrosion cracking compared to 300-series austenitic stainless steels. They are particularly suitable for critical applications in heat exchangers, condensers, evaporators, and chemical process piping under high-temperature, high-pressure, and highly corrosive fluid environments.

The ASTM A789 UNS S32750 bright annealed seamless tubes are widely used in high-temperature, high-pressure heat exchange systems across marine engineering, power generation, petrochemical, and environmental protection industries-such as LNG terminal condensate pipes, seawater desalination evaporators, and chemical reactor cooling units-offering the advantages of extended service life and reduced maintenance costs.

GNEE strictly adheres to international standards including ASTM A790/ASME SA790 and EN 10216-5 for production, providing original factory warranties and third-party inspection reports (such as eddy current testing, hydrostatic testing, and corrosion tests) to ensure stable and reliable product quality.Mail:es@gescosteel.com