Pipe Truss Structures — The Architecture of Curved Steel
A pipe truss is not just a structural element. It is the visual identity of a building — the curved canopy of a station, the soaring roof of a stadium, the elegant arch of a bridge approach. We hold the Special Grade qualification for pipe truss manufacturing. Very few companies in China can say that.
A Truss Is Only as Good as Its Joints
A pipe truss looks simple: steel tubes arranged in a triangular pattern. The complexity is hidden at the nodes — the points where three, four or five tubes meet at different angles. At these intersections, full-penetration welds must transfer forces between tubes of different diameters and wall thicknesses. A poorly executed joint is a stress concentration point. A fatigue crack starts there. A joint failure is a structural failure.
This is why we hold the Special Grade — the highest national qualification — for pipe truss manufacturing. It certifies that our welding procedures, joint fit-up precision and quality control meet the standard required for the most complex pipe truss structures. Not every company can manufacture pipe trusses at this grade. We can.
What Is a Pipe Truss Structure?
A pipe truss is a structural system built from steel tubes (circular hollow sections or rectangular hollow sections) connected at node points to form triangular load-bearing frameworks. The triangular geometry gives the truss its rigidity — each member carries either axial tension or compression, with minimal bending, making the system highly material-efficient.
Pipe trusses offer advantages over traditional H-beam trusses: circular tubes have equal-section properties in all directions (ideal for wind from any angle), the smooth surface reduces wind load coefficients, the closed section resists torsion better than open sections, and the aesthetic is architecturally superior — pipes look intentional, beams look industrial.
What It Takes to Build a Pipe Truss
Pipe truss manufacturing requires capabilities that go beyond standard structural steel fabrication. Here is what our Special Grade qualification certifies.
Steel Tube Bending
Large-diameter steel tubes (114-630mm) bent to specified radii using hydraulic CNC bending machines. Bending accuracy is critical — a tube bent 5mm off-radius creates fit-up errors that cascade through every downstream joint.
Multi-Tube Joint Fabrication
At each node, multiple tubes converge at compound angles. We CNC-cut each tube end to the exact intersection geometry, ensuring full-penetration weld preparation. No hand-cutting. No gap-filling with weld metal. Precise fit-up is the foundation of joint integrity.
Certified Welding Procedures
Our pipe truss welding procedures are qualified to GB 50661 and AWS D1.1. Every welder is certified for the specific joint type and position. Welding is performed with gas-shielded flux-cored wire (FCAW) or submerged arc welding (SAW) depending on tube size and wall thickness.
NDT Verification
Every node weld is verified by non-destructive testing — ultrasonic testing (UT) for internal defects, magnetic particle inspection (MT) for surface cracks, and radiographic testing (RT) for critical joints. NDT reports are included with every shipment.
Where Pipe Trusses Excel
Infrastructure
Station Canopies
High-speed rail stations, bus terminals and airport concourses. Curved pipe trusses create the soaring, wing-like canopy forms that define modern transit architecture while providing weather protection over long platforms.
Industrial
Long-Span Roofs
Coal sheds, stockyard enclosures and industrial facility roofs. Pipe trusses achieve spans of 60-150m without interior columns, maximizing storage capacity and equipment access beneath.
Commercial
Stadiums & Arenas
Sports venues and performance halls. The visual quality of exposed pipe trusses creates the architectural character of the space — the structure IS the design, not hidden behind cladding.
Need a Pipe Truss Structure?
Send us your span, loading and architectural requirements. Our engineering team will provide a pipe truss system recommendation with joint design, member sizing and quotation within 24 hours.
Request a Pipe Truss Quote