UNS S32205 S31803 Duplex Stainless Steel Plate Sheet Structural Section Bar

UNS S32205 / UNS S31803 Duplex Stainless Steel PlatesPeak Kong Special Steel leverages a strong global supply chain and maintains long-term in-house stock covering a comprehensive thickness range of 3 mm to 100 mm for UNS S32205 / UNS S31803 duplex stainless steel plates.
We are more than a steel material supplier. Peak Kong Special Steel is committed to creating greater value for customers through advanced processing capabilities and engineering services. Equipped with internationally advanced surface-finishing and deep-processing equipment, we provide global customers with one-stop value-added services including high-precision cutting, beveling, precision welding, non-destructive testing (NDT), and finished/semi-finished component assembly.
Our products and processing services can be aligned with applicable EN, ASTM, JIS and BS requirements for demanding construction, marine and industrial applications, making UNS S32205 / UNS S31803 an excellent choice for heavy-duty corrosion-resistant structures operating under severe service conditions.
Core Technical Capabilities and Manufacturing AdvantagesInternational Standards CoverageRaw materials and finished products are manufactured and inspected in accordance with internationally recognized standards, including EN 10088-2 for technical delivery conditions for stainless steel flat products and ASTM A240 / A240M for chromium and chromium-nickel stainless steel plate, sheet and strip for pressure vessels and general applications.
The material and structural solutions can also be designed in accordance with Eurocode 3 (EN 1993-1-4) and AISC 370 for stainless steel structural applications, supporting demanding international engineering projects.
One-Stop Precision and Deep-Processing ServicesCutting:
Laser cutting, plasma cutting and high-pressure waterjet cutting are available to achieve clean cutting edges, minimized heat-affected zones (HAZ) and high dimensional accuracy.
Beveling:
X, V, K and other complex welding bevel configurations can be manufactured to prepare components for heavy-duty welding and structural fabrication.
Welding & NDT:
Welding procedures can be implemented in accordance with qualified procedures and project requirements, with welding teams subject to audits and certification requirements from SGS, TÜV and DNV. Professional NDT services including UT, MT and PT are available to verify the integrity and quality of finished components.
100% Quality Traceability and International AcceptanceFinished products can be supplied with complete official inspection documentation and Material Test Certificates (MTC 3.1 / 3.2).
CE and UKCA certification support can be provided according to applicable project requirements, facilitating international tendering, major infrastructure projects and pressure-vessel applications.
UNS S32205 / UNS S31803 Duplex Stainless Steel Plate SpecificationsPeak Kong Special Steel combines substantial in-house inventory with flexible processing capabilities, enabling the supply of standard plates as well as drawing-based customized components.
Plate Thickness3.0 mm to 100.0 mm
The inventory range covers thin, medium, heavy and extra-heavy plates, with customized thickness and surface-finishing options available according to project requirements.
Standard Plate Widths1500 mm / 2000 mm / 2500 mm
Ultra-wide plates can also be customized and precision-cut according to customer drawings and engineering requirements.
Standard Plate Lengths3000 mm / 6000 mm / 8000 mm / 12000 mm
Long-length plate processing, precision cut-to-length fabrication and laser welding solutions can be provided according to project requirements.
Drawing-Based Customized ProcessingAccording to customer drawings and technical specifications, Peak Kong Special Steel can provide:Precision-cut components
Welded prefabricated components
Pressure-vessel shells
Beveled structural components
Flanges and blind plates
Customized structural plates
Other non-standard fabricated componentsSurface Finish: The standard surface condition is No.1 pickled industrial finish. Polished, brushed and other surface treatments can be customized according to application requirements.
Customers are welcome to provide drawings and technical specifications for engineering evaluation and processing coordination.
Advantages of UNS S32205 / UNS S31803 Duplex Stainless Steel PlatesUNS S32205 / UNS S31803 duplex stainless steel combines austenitic and ferritic microstructures, providing an excellent balance of strength, toughness and corrosion resistance.
High Strength for Heavy-Duty StructuresDuplex stainless steel offers significantly higher yield strength than conventional austenitic stainless steels such as 316L. This enables engineers to optimize plate thickness and structural weight in suitable applications while maintaining required load-bearing performance.
Excellent Corrosion ResistanceThe material provides strong resistance to pitting and crevice corrosion and offers excellent resistance to chloride-induced stress corrosion cracking. This makes it particularly suitable for seawater, coastal, chemical-processing and other chloride-rich environments.
Suitable for Severe Service ConditionsUNS S32205 / UNS S31803 is well suited to environments involving seawater, salt spray, chemical media, humidity and temperature fluctuations. Proper material selection, fabrication, inspection and maintenance remain essential for achieving the intended service life.
Engineering-Oriented Processing CapabilityBy integrating precision cutting, beveling, welding and NDT, Peak Kong Special Steel can supply not only raw plates but also semi-finished and finished components, helping customers reduce secondary processing requirements and simplify project procurement.
Applications of UNS S32205 / UNS S31803 Duplex Stainless Steel PlatesChemical, Oil and Gas IndustriesLarge chemical storage tanks
Chemical tanker internal lining plates
Pickling tanks
Heavy-duty pressure-vessel shells
Heat-exchanger tube sheets
Oil and gas separators
Corrosion-resistant process equipmentMarine Engineering and Seawater DesalinationHigh-pressure reverse-osmosis (RO) system housings
Desalination evaporator structures
Offshore drilling platform production-system lining plates
Corrosion-protection cladding and protective plates for marine terminal structures
Seawater-handling equipment and structural componentsWater Treatment and Environmental EquipmentLarge clarifier scraper systems for municipal and industrial wastewater-treatment plants
Structural components for wastewater-treatment equipment
Flue-gas desulfurization (FGD) scrubber lining plates
Corrosion-resistant components for waste-to-energy facilities
Environmental protection equipment operating in aggressive mediaModern Steel Structures and BridgesLoad-bearing connection plates for long-span coastal bridges
Structural steel components for landmark architectural projects
Corrosion-resistant support plates for coastal infrastructure
Long-life foundation and structural components for nuclear and clean-energy projects
Heavy-duty structural plates for demanding infrastructure applicationsOne-Stop Value-Added Processing from Plate to Finished ComponentPeak Kong Special Steel provides integrated services covering material sourcing, processing, welding, inspection and delivery:UNS S32205 / UNS S31803 duplex stainless steel plate supply
In-stock plate procurement
Precision laser, plasma and waterjet cutting
X, V, K and other customized beveling
Precision welding and prefabrication
Finished and semi-finished component manufacturing
UT, MT, PT and other NDT services
Dimensional and visual inspection
MTC 3.1 / 3.2 documentation
Drawing-based customized fabrication
Surface polishing, brushing, pickling and passivation where applicable
Project-based packaging and delivery coordinationContact Peak Kong Special SteelFor UNS S32205 / UNS S31803 duplex stainless steel plate stock procurement, precision cutting, beveling, welding or one-stop value-added processing services, please contact Peak Kong Special Steel.
Expand the possibilities of green infrastructure with high-performance duplex stainless steel solutions.
Peak Kong Special Steel provides advanced, reliable and internationally oriented one-stop solutions for specialty steel materials, structural plates, precision fabrication, welding, inspection and engineering applications.