manager@ronsteel.com
+8617773160488
+8617773160488
Why Duplex Stainless Steel Tubes?
Duplex stainless steel features a dual-phase microstructure (ferrite + austenite), offering:
High yield strength—about twice that of standard 304/316 stainless steel
Superior resistance to pitting, crevice, and stress corrosion cracking
Excellent mechanical performance in aggressive and high-pressure environments
Cost-effective lifecycle due to reduced maintenance and extended service life
Popular grades include UNS S31803 and UNS S32205, both commonly used in marine applications and nuclear-grade systems.
Nuclear power systems demand materials that can withstand high radiation, pressure, and corrosive media such as boric acid, steam, and high-purity water. Duplex stainless steel tubes are ideal for:
Heat exchangers and condensers in pressurized water reactors (PWRs)
Cooling circuits and recirculation systems
Fuel reprocessing and waste handling pipelines
Structural tubing in containment buildings
Their resistance to intergranular attack, chloride stress corrosion, and thermal fatigue ensures long-term stability and safety.
✅ Ronsco’s duplex tubes are manufactured under strict nuclear-grade specifications such as ASTM A790 and ASME Section III compliance.
Marine environments expose metals to seawater, salt-laden air, and high-pressure subsea conditions, which accelerate corrosion. Duplex stainless tubing excels in:
Seawater desalination systems
Subsea oil & gas pipelines
FPSO topsides and risers
Ballast water treatment and cooling systems
Marine heat exchangers and condensers
Compared to austenitic stainless steel, duplex tubes offer:
Longer service life in chloride-rich environments
Reduced maintenance costs
High mechanical strength under pressure and vibration
🌊 With outstanding resistance to crevice and pitting corrosion, Ronsco’s duplex pipes are ideal for both topside and subsea marine applications.
We provide both seamless and welded duplex stainless steel tubes, available in custom lengths, wall thicknesses, and finishes. Our products meet:
ASTM A789 / A790
EN 10216-5 / EN 10217-7
NACE MR0175 for sour service
PED / ASME certified upon request
Whether you’re designing a nuclear power unit or developing an offshore platform, Ronsco Tubes ensures material reliability, traceability, and long-term performance.
Explore more about our duplex stainless steel tubes here, or contact our technical team for consultation on your nuclear or marine project requirements.
