Dual-grade S31803/S32205 pipe delivers twice the yield strength of 316L and PREN above 34 for chloride-heavy chemical, hydrogen and oil-and-gas service
[Zhengzhou], China - October 3, 2026 - [Henan TOM Intelligent Technology Co., Ltd.], a manufacturer and supplier of stainless steel and duplex pipe for industrial heat-transfer systems, today announced a dedicated supply program for ASTM A790 S31803 stainless steel pipe (commonly dual-certified to S32205), serving heat exchanger OEMs, EPC contractors and plant operators in chloride-bearing service.
Corrosion remains the dominant cause of heat exchanger failure. Chloride attack, pitting and stress corrosion cracking degrade equipment quietly until maintenance costs climb and unplanned shutdowns become routine. Duplex S31803 counteracts all three mechanisms. Its balanced austenitic–ferritic microstructure delivers a minimum yield strength of 450 MPa - roughly double that of 316L - while a PREN above 34 keeps the passive film intact in aggressive chloride media. Industry research consistently shows duplex exchanger tubes lasting two to three times longer than equivalent 316L installations in chloride service.
"Corrosion is what takes exchangers offline, and halving the wall thickness while doubling the strength changes the whole cost equation," "With S31803 our customers get a thinner, lighter, longer-life piping system - and a life-cycle cost that stands up to capital planning review."
Engineered and verified for demanding duty. All pipe is supplied under ASTM A790 with chemistry certified to S31803 and typically dual-certified to S32205, and recommended for continuous service up to 300°C (572°F). Quality assurance covers dimensional tolerance checks, hydrostatic testing and non-destructive examination, supported by traceable mill test reports and an ISO 9001-certified quality system. Third-party inspection during production is available for large orders.
Supply capability. The program covers welded and seamless configurations in standard exchanger sizes, with mill stock supporting short lead times on common dimensions. Non-standard diameters, custom cut lengths, special end preparations and specific surface finishes are produced to order. Tiered pricing is available as order volumes increase, and the company's technical team supports welding procedure guidance, material certification paperwork and logistics planning.
S31803 duplex pipe is applied across desalination plants, chemical processing, oil and gas facilities and new hydrogen infrastructure, including electrolysis systems and fuel cell cooling circuits where long-cycle operational stability is essential.
Availability. ASTM A790 S31803 stainless steel pipe is available for immediate order. Engineers and procurement teams can request data sheets, dimension tables and quotations by emailing [sarah@manufacturerpipe.com] or visiting [www.manufacturerpipe.com].
About [Henan TOM Intelligent Technology Co., Ltd.]
[Henan TOM Intelligent Technology Co., Ltd.] is a producer of stainless and duplex steel pipe for heat exchangers, pressure systems and process piping. Operating [20] production lines with an annual capacity of [3500000] tons, the company supplies chemical plants, power stations, desalination facilities and offshore projects worldwide, supported by full material traceability and third-party inspection services.
Media Contact:
[sarah]
[Henan TOM Intelligent Technology Co., Ltd.] Tel: [+86 19069638227] ·
Email: [sarah@manufacturerpipe.com]
Web: [www.manufacturerpipe.com]
