Duplex Sheets
Let’s face it – not all stainless steel is built for the real world. Some corrode under stress. Some crack under pressure. That’s where Duplex Sheets come in.
Duplex stainless steel is a balanced blend of austenite and ferrite – two crystal structures that give it the best of both worlds: strength and corrosion resistance. At RSD, our Duplex Sheets are made for industries that can’t afford failures—think desalination plants, offshore rigs, chemical storage systems, and pressure vessels.
If your project involves saltwater, pressure, or aggressive chemicals, this might be the metal your operation has been waiting for.
What Makes Duplex “Different”?
Unlike regular stainless steel, Duplex doesn’t just resist corrosion—it resists stress corrosion cracking, one of the biggest threats in aggressive environments. It’s also about twice as strong as standard 300-series stainless, which means you can often use thinner sheets without compromising on durability.
It’s practical. Efficient. And yes, seriously tough.
Grades & Specs Available
- Available Grades:
- UNS S31803 (Standard Duplex)
- UNS S32205 (Upgraded corrosion resistance)
- Thickness Range: 0.5 mm – 50 mm
- Widths: Up to 2500 mm
- Standards: ASTM A240, ASME SA240
- Finishes: Hot rolled, pickled, annealed, 2B, No.1
We cut to custom sizes and also offer matching pipes, coils, and plates.
Why Clients Trust Duplex Sheets
High Strength, Low Weight:
Because Duplex is stronger than traditional stainless, you can use thinner sheets without compromising performance. Lighter weight = easier transport and installation.
Built for Salt, Steam & Pressure:
It handles salty, high-pressure, high-temperature, chemically volatile environments without breaking a sweat. Perfect for marine, chemical, or industrial water systems.
Great Weldability:
You won’t spend extra on specialized fabrication. Duplex works well with standard welding methods.
Saves You in the Long Run:
Yes, Duplex might cost more than regular SS upfront—but it lasts longer, resists more, and needs fewer repairs. That’s ROI worth considering.
Where Duplex Sheets Work Best
- Desalination Plants & Water Treatment Facilities
Handles brine, chlorides, and pressurized systems with ease. - Oil & Gas Platforms
Excellent for structural parts, piping, risers, and tanks exposed to the ocean and aggressive gases. - Chemical Processing Units
For acids, solvents, and high-pressure reactors. - Heat Exchangers & Boilers
Particularly where both strength and corrosion resistance are critical. - Architectural Applications
Facades, wall cladding, and support structures that must perform in coastal zones.
What You Get with RSD
Genuine Duplex with Full Certification
We supply Duplex Sheets with MTCs, corrosion test reports, and origin traceability because quality isn’t negotiable.
Tech + Flexibility
Need cut-to-size sheets? Matching pipes and coils? Bulk order support? We’ve got it covered.
Export-Ready Logistics
From Mumbai to the Middle East or Europe we pack it safe, document it right, and ship it fast.
No-Jargon Support
We explain what matters, help you choose the right grade, and simplify every step of your buying process.
