UNS S32205 S31803 Duplex Stainless Steel I Beam H Beam IPE HEA HEB Structural Section

Building Reliable Load-Bearing Systems for Extreme Environments with High Strength, Corrosion Resistance and Precision WeldingIn marine engineering, chemical processing equipment, coastal buildings and major infrastructure, structural steel must withstand not only high loads and complex stresses, but also long-term corrosion challenges caused by chlorides, humidity, salt spray, chemical media and temperature fluctuations.
Peak Kong Special Steel specializes in the development and manufacturing of UNS S32205 / UNS S31803 duplex stainless steel H-beams, I-beams and non-standard structural profiles. By integrating laser hybrid welding technology, proprietary flexible production lines and a comprehensive quality traceability system, Peak Kong Special Steel provides high-end engineering projects with one-stop structural profile solutions featuring high strength, corrosion resistance, precision fabrication and full traceability.
UNS S32205 / UNS S31803: High-Performance Structural Materials for Severe Service ConditionsUNS S32205 and UNS S31803 belong to the 2205 series of duplex stainless steels, combining the characteristics of austenitic and ferritic phases to achieve an excellent balance of strength, toughness and corrosion resistance.
Compared with conventional structural steels and certain traditional stainless steels, duplex stainless steel structural profiles can provide the following advantages for engineering projects:
Higher load-bearing capacity and yield strength
Excellent resistance to pitting corrosion, crevice corrosion and stress corrosion cracking
Good low-temperature toughness and structural stability
Suitable for seawater, salt spray, humid-heat and various chemical environments
Potential for weight reduction and optimized cross-sections while meeting design load requirements
Reduced long-term coating, corrosion-protection maintenance and replacement costs

Actual material properties, grade suitability and design parameters shall be confirmed according to the applicable supply standard, heat-treatment condition, engineering specifications and inspection requirements.
Laser Hybrid Welding: Overcoming the Limitations of Conventional Hot-Rolled ManufacturingConventional hot-rolling processes are often subject to limitations involving tooling, minimum order quantities and cross-sectional design when manufacturing large-size, thick-wall and special-section structural profiles. Peak Kong Special Steel applies laser hybrid welding technology together with automated flexible production lines to provide more versatile manufacturing solutions for duplex stainless steel H-beams and I-beams.
High-Precision Flexible ManufacturingThrough digital process control and automated welding and assembly systems, Peak Kong Special Steel can manufacture standard sections, oversized profiles and non-standard structural sections, meeting different engineering requirements for cross-sectional dimensions, plate thickness, length and assembly accuracy.
Low-Heat-Input WeldingThe concentrated energy of the laser heat source, combined with hybrid welding technology, helps reduce the heat-affected zone and welding distortion while improving microstructural control and dimensional stability during the welding of thick-wall duplex stainless steel.
Thick-Section Full-Penetration Welding CapabilityFor large-size H-beams and I-beams, Peak Kong Special Steel can provide full-penetration welding solutions for thicknesses of approximately 30–50 mm, subject to product design and welding procedure qualification requirements, ensuring reliable structural continuity of the welded joints.
Small-Batch, Multi-Size and Non-Standard CustomizationFree from the tooling and large-volume production limitations of conventional hot rolling, Peak Kong Special Steel supports engineering trials, project procurement and special structural development, making it suitable for highly customized, high-precision and multi-specification engineering projects.
Standard H-Beam and I-Beam Section RangesAccording to customer drawings, design specifications and supply requirements, Peak Kong Special Steel can provide a variety of internationally recognized structural section series, including:
Universal Beams (UB)Approximate size range: 127 × 76 × 13 to 1016 × 305 × 584
Suitable for large structural main beams, platform beams and heavy-duty load-bearing systems.
Universal Columns (UC)Approximate size range: 152 × 152 × 23 to 356 × 406 × 634
Suitable for high-rise building columns, heavy industrial plants and large equipment support structures.
Universal Bearing Piles (UBP)Approximate size range: 203 × 203 × 45 to 305 × 305 × 283
Suitable for pile foundations, marine terminals, offshore foundations and heavy-duty pile-cap systems.
European I-Beam SeriesIPE: IPE 100 to IPE 750
IPN: IPN 80 to IPN 600

European Wide-Flange Beam SeriesHEA: HEA 100 to HEA 1000
HEB: HEB 100 to HEB 1000
HEM: HEM 100 to HEM 1000
HL: HL 920 to HL 1100
HP: HP 200 to HP 400
HD: HD 260 to HD 400

American Structural Steel SeriesW-Series Wide-Flange Beams: approximately 6 × 6 to 40 × 12
S-Series Standard Beams: approximately 3 × 5.7 to 24 × 121

Actual available specifications, dimensional tolerances, section weights, lengths and supply conditions shall be technically confirmed according to engineering drawings, material requirements and manufacturing feasibility.
Non-Standard Profiles and Drawing-Based Custom ManufacturingFor special sections that are difficult to manufacture through conventional hot rolling, Peak Kong Special Steel provides comprehensive flexible fabrication services, including:
Asymmetric H-beams and I-beams
Variable-section beams and columns
Extra-wide flanges or specially designed webs
Special open and composite sections
Non-standard plate thicknesses and localized reinforcement structures
Drawing-based cutting, welding, beveling and prefabrication
Hole positioning, end machining and connection-area fabrication according to assembly requirements

Customers may provide cross-sectional drawings, structural calculation data, material grades, lengths, quantities and acceptance standards. Our technical team can conduct preliminary drawing reviews and evaluate the corresponding manufacturing solution.
International Standards and Quality Documentation SupportProducts and related welding procedures can be aligned with applicable international standards and design specifications according to project requirements, including:
EN 10088-5
ASTM A484 / A484M
EN 10219
EN 15614-11 — Welding Procedure Qualification for Laser Welding
EN 15614-14 — Welding Procedure Qualification for Hybrid Welding
Eurocode 3 (EN 1993) — Design of Stainless Steel Structures
Other applicable EN, ASTM, JIS and BS standards

To support customer acceptance and third-party inspection requirements, the following documentation and inspection services can be provided:
Material Test Certificates (MTC) 3.1 / 3.2
Chemical composition and mechanical property reports
Dimensional, visual and geometric accuracy inspection reports
Welding procedure qualification and welding inspection documentation
Ultrasonic Testing (UT)
Magnetic Particle Testing (MT, where applicable)
Penetrant Testing (PT, where applicable)
Full-penetration weld inspection and quality records
Batch, production-shift and raw-material traceability records
CE, UKCA and third-party acceptance support

Specific inspection methods, sampling ratios and documentation formats shall be implemented according to product application, contractual technical requirements and project acceptance specifications.
Suitable for High-Requirement Engineering ApplicationsLarge Buildings and Public InfrastructureHeavy-duty steel frames for high-rise landmark buildings
Long-span trusses for airport terminals and high-speed railway stations
Primary support structures for coastal high-rise curtain walls
Structural systems for large stadiums and convention centers
Exposed architectural steel structures and AESS applications

Marine Engineering and Major InfrastructureLoad-bearing structures and auxiliary components for sea-crossing bridges
Primary load-bearing frameworks for marine terminal mooring systems
Equipment skid bases for offshore platforms
Support structures for offshore wind and nearshore engineering
Deepwater lifting equipment and heavy-duty cantilever structures

Water Treatment, Environmental Protection and Chemical EquipmentModular load-bearing frames for seawater desalination plants
Heavy-duty crane runway beams for wastewater treatment plants
Support lattice columns for chemical scrubber towers
Equipment platforms and pipe racks in corrosive environments
External supports for chemical storage tanks and process equipment

Special Vessels and Heavy MachineryInternal structures of chemical tankers and LNG / LPG vessels
Hull reinforcement longitudinals and equipment supports
Main beams and booms for port container cranes
Heavy machinery bases and load-bearing platforms
Offshore engineering modules and large equipment transportation frames

One-Stop Service from Material Selection to Finished Product DeliveryWith an engineering-oriented approach, Peak Kong Special Steel provides comprehensive services covering design, manufacturing, inspection and delivery:
Duplex stainless steel material selection and grade recommendations
Evaluation of H-beam and I-beam section solutions
Preliminary review of engineering drawings, welded joints and assembly requirements
Manufacturing solution design for standard and non-standard structural profiles
Laser hybrid welding and full-penetration welding process execution
Precision cutting, beveling, end machining and supporting fabrication
Dimensional inspection, weld inspection and coordination of third-party acceptance
Delivery of MTC, NDT and complete quality documentation
Batch supply, packaging and project schedule management

Redefining High-Performance Structural Profiles with Duplex Stainless SteelUNS S32205 / UNS S31803 duplex stainless steel H-beams and I-beams combine high strength, corrosion resistance and long-term service performance, making them a high-performance material solution for achieving safe, lightweight and long-life structural designs in marine, chemical, water-treatment and large-scale building projects.
With advanced laser hybrid welding technology, automated flexible manufacturing capabilities and a rigorous quality traceability system, Peak Kong Special Steel is committed to transforming every duplex stainless steel structural profile into a structural component featuring precise dimensions, reliable welding quality and genuine engineering value.
For bulk procurement, drawing-based customization, non-standard section development or one-stop fabrication services for UNS S32205 / UNS S31803 duplex stainless steel H-beams and I-beams, please provide your engineering drawings, material requirements, specifications, dimensions and estimated quantities. Contact Peak Kong Special Steel for professional technical solutions and project quotations.