Peak Kong Special Steel Co., Ltd. has successfully applied its innovative “laser fusion and arc hybrid welding (laser hybrid welding)” technology to mass-produce high-precision duplex/super duplex stainless steel structural profiles.

This process overcomes the technical bottleneck of difficult-to-weld materials and fully complies with international structural standards from multiple countries, including the European Union (EN), the United States (ASTM), Japan (JIS), and the United Kingdom (BS).

mainly including low-alloy duplex steel 2101, standard duplex steel 2205 (such as 2304/2205), and 2507 super duplex steel with extremely high corrosion resistance.
Material Microstructure: The material possesses a balanced microstructure with approximately 50% ferrite and 50% austenite, exhibiting both ultra-high mechanical strength and excellent resistance to pitting corrosion and stress corrosion cracking.

Excellent Corrosion Resistance:Precise control of heat input ensures that the corrosion resistance and mechanical properties of the weld and HAZ are completely equivalent to those of the base metal.
Integrated High Strength:The base metal is laser-fused into a single, monolithic structure. Destructive testing has confirmed that the material itself bends or fractures before the weld area, demonstrating extremely high weld strength.
Process Approval:Their welding team has passed the rigorous auditing of the Hong Kong Laboratory Accreditation Scheme (HOKLAS) and obtained professional welding process approval certification.

Stainless Steel H-beams / I-beams (Beams & H-Sections)
Stainless Steel Channels (Channels / UPN / UPE)
Angle Steel (Equal / Unequal Angles)
Special Pipes and Custom Geometric Profiles (Custom Sections)

Duplex/Super Duplex Stainless Steel Structural Profiles: This series is widely used in:
Marine Engineering and Shipbuilding: Extreme immersion environments such as LNG carriers, offshore oil drilling platforms, and ship bulkheads, replacing traditional 316/L stainless steel. Stainless steel.
Industrial and environmental infrastructure: Structural support for wastewater treatment plants, desalination plants, and petrochemical and pharmaceutical equipment.
High-end building structures: Public buildings or long-span bridges that combine aesthetics, high load-bearing capacity, and maintenance-free operation throughout their entire lifecycle.

If you are planning to incorporate these high-precision duplex steel profiles into your project, please tell me: What are the specific profile shapes and dimensions required for your project (e.g., specific sizes of H-beams or channel steel)? What is the primary application environment for your project (e.g., highly corrosive nearshore environments, chemical plants, or purely structural interiors)? Is assistance required to verify specific international certification standards (e.g., EU EN 10025 or US ASTM)?