Large Tonnage Member
Special-shaped Steel Structure Components
Custom Fabrication of Curved, Tapered, Built-up, Spatial Steel, Custom Steel Nodes and Complex Steel Components for Architectural and Industrial Projects
Get Your Custom SolutionComponents of Special-shaped Steel Structure
Special-shaped structural steel components are non-standard steel members customized and fabricated according to unique designs. Machining accuracy and welding quality directly determine structural safety. These steel components feature curved shapes and random angles that meet the project’s requirements. The use of special-shaped structural steel components makes the steel frame more flexible in dimensions. As they have great outlooks, they are more and more frequently used in building and bridge structures.

Steel Structure Components Feature
- Design Flexibility: The special-shaped steel structures provided by AGICO are not limited by traditional shapes. They can be customized according to the architect’s creativity and actual needs, achieving diverse spatial layouts and exterior designs.
- Superior Mechanical Performance: The stress analysis of steel structure components is more precise, allowing full utilization of the material’s mechanical properties to achieve lightweight and high efficiency.
- Higher Construction Difficulty: Due to the complex shapes of special-shaped steel structure components, the requirements for fabrication, transportation, and installation are higher, requiring a professional technical team and construction equipment.
Special Shaped Structure Components Fabrication
AGICO offers fabrication services for heavy-duty steel structural components widely used in bridges, power plants, petrochemical projects, offshore platforms, and landmark buildings. These irregularly shaped members feature exceptional load-bearing capacity, advanced welding quality, and long-term durability. The manufacturing processes include CNC cutting, bending, assembling, welding, heat treatment, shot blasting, painting, or hot-dip galvanizing.
Special Shaped Structure Components Specifications
- Materials: Q235B, Q345B, Q420, ASTM A36/A572, EN S355, etc.
- Dimensions: Single-piece length up to 30 m, weight ranging from tens to hundreds of tons.
- Surface treatment: Shot blasting, painting, hot-dip galvanizing.
- Welding processes: Submerged Arc Welding (SAW), Metal Active Gas Welding (MAG), and automatic welding processes.
- Inspection standards: Ultrasonic Testing (UT), Radiographic Testing (RT), Magnetic Particle Testing (MT), Penetrant Testing (PT).

Components of Special-shaped Steel Structure
Special-shaped structural steel components are non-standard steel members customized and fabricated according to unique designs. Machining accuracy and welding quality directly determine structural safety. These steel components feature curved shapes and random angles that meet the project’s requirements. The use of special-shaped structural steel components makes the steel frame more flexible in dimensions, as they have great outlooks, they are more and more frequently used in building and bridge structures.
Special Shaped Structure Components Types
Common special-shaped structural components include steel box columns, steel box girders, lattice steel structures for bridges, offshore pipe piles, onshore pipe piles, wind turbine tubular towers, steel transmission tubular poles, oil and gas platform steel structures, etc.
According to their fabrication methods and functions, the special-shaped structural components fabricated by AGICO can be classified into 6 types: curved steel components, tapered steel components, polygonal steel components, built-up special-shaped components, complex spatial steel components, and custom steel nodes and connections.


Fabrication Workshop and Equipments


Quality Control

Material Inspection

Weld Inspection

Dimensional Inspection

Load Testing
Why Choose AGICO
For steel structure export, AGICO fabricates the special shaped structural steel components following International standard certifications: ISO 9001, EN1090, AWS D1.1, GB/T19879.
- Ultra-high load-bearing capacity
suitable for heavy-load requirements of hundreds of tons or more
- Custom complex structures
supports curved, special‑shaped, and ultra‑thick plate assembly and welding.
- High‑precision processing
CNC cutting, robotic welding, non‑destructive testing (NDT).
- Long‑lasting protection
shot blasting Sa2.5, epoxy coating, hot‑dip galvanizing.

Steel Structure Components-Related Projects
For now, AGICO has been supplying large-tonnage steel structure component fabrication services. The replanned large-scale projects are featured with high-standard load-bearing capacity, seismic performance, and complex structure, including
Large Industrial Plant: load-bearing beams, columns, and equipment support frames
Steel Bridge Engineering: main load-bearing girders, piers, curved or specially shaped structural components
High-rise and Landmark Buildings: specially shaped beams and columns with unique forms, structural joint components
Rail transit and Aerospace: viaducts, airport terminals, large-span hangar structures




Fabricate Steel Structure Components for Your Project
If you have any special requirements for special-shaped structural steel component fabrication, surface treatment (painting, or hot-dip galvanizing), or any requirements for international standards, contact us now for a tailored solution and best price offer.
