Long-Span Steel Truss Beam

Long-Span Steel Truss Beam – Enterprise-Grade Structural Solution by Shenyang Zhongda

Long-Span Steel Truss Beam systems from Shenyang Zhongda provide shown engineering excellence when your project requires large areas free of columns. Our 75,000 m² production facility has produced more than 80,000 tons of precise steel structures every year since 2004. Our Steel Truss Beam solutions are designed with H-shaped chords and optimum web arrangements, using Q420D high-strength steel with spans between 20 and 80 meters. We provide large EPC contractors, such as China State Construction Engineering Corporation, with ISO 3834 welding certification, AISC-compliant bolt nodes, and FEA-validated designs that achieve 25% improved load-bearing capability. Custom large-span configurations ship in 45 days with complete BIM assembly support, while standard spans ≤50m ship in 30 days.

Product Description

You need structures that conquer distance without compromise. Our long-span steel truss beam systems are sophisticated frameworks where interconnected members—upper and lower chords paired with web elements—form triangular units spanning 24 to 80 meters without intermediate supports.

This isn't just steel fabrication. It's solving your core challenges: creating massive column-free interiors for warehouses, accommodating HVAC systems through open-web designs, and reducing structural dead weight by up to 30% compared to solid-web alternatives.

The geometric stability of triangular configurations distributes loads efficiently across the entire structure. You get architectural freedom, reduced material costs, and faster installation times—all while meeting international structural codes.

Whether you're planning an aviation hangar, logistics hub, or sports arena, these beams handle extreme wind loads, seismic forces, and dynamic traffic with measured precision.

 

Long-Span Steel Truss Beam

 

Product Advantages

Superior Strength-to-Weight Performance

Our high-strength Q420D steel achieves exceptional load-bearing capacity while minimizing structural mass. You transport fewer materials to site and reduce foundation requirements—cutting project costs by 15-20%.

Modular Pre-Fabrication Efficiency

Every component is CNC-fabricated in our climate-controlled workshop with ±0.1mm precision. Pre-assembly fit-up testing ensures perfect alignment before delivery. Your site installation time drops by 30-40% compared to field-welded alternatives.

Integrated Utility Routing

Electrical conduits, fire suppression equipment, and mechanical systems all have natural routes thanks to the open-web design. You get important vertical clearance for your operations and do away with expensive ceiling drops.

Optimization of Advanced Engineering

Every design is validated by Finite Element Analysis (FEA), which optimizes member sizing and connection details. Throughout the structure's service life, pre-cambering maintains stringent tolerance standards by compensating for deflection in spans longer than 50 meters.

Standards for Long-Term Durability

In industrial settings, hot-dip galvanized coatings that adhere to ISO 12944 C4-C5 standards provide corrosion protection for more than 25 years. Without sacrificing structural integrity, optional intumescent fireproof coatings reach fire ratings of up to four hours.

Global Compliance Assurance

Manufactured to AISC 360, EN 1993 (Eurocode 3), and AWS D1.1 welding standards. Full documentation packages include Mill Test Certificates, NDT reports, and English technical drawings for international projects.

Specifications & Customization

Manufacturing & Quality Control

Your projects deserve factory precision, not field compromises.

Advanced Fabrication Technology

Our 75,000 m² workshop houses CNC cutting systems handling ultra-thick plates up to 300mm, 3-axis drilling machines maintaining ±0.1mm tolerance, and automated welding lines ensuring consistent penetration across every joint. A 50-ton crane capacity enables handling of pre-assembled truss segments weighing up to 45 tons.

Multi-Stage Inspection Protocol

Every Long-Span Steel Truss Beam undergoes five quality checkpoints:

1. Material Verification – Mill Test Certificates confirm chemical composition and yield strength

2. Weld Integrity Testing – Ultrasonic Testing (UT) and Magnetic Particle Inspection (MPI) detect subsurface and surface flaws in critical tension chord joints

3. Dimensional Accuracy Checks – Laser measurement validates member lengths and connection points against BIM models

4. Pre-Assembly Fit-Up – Trial assembly of modular segments confirms field compatibility before coating

5. Coating Thickness Validation – Dry Film Thickness (DFT) gauges verify protective coatings meet specified micron standards

International Management Systems

ISO 9001, ISO 14001, and ISO 45001 certifications govern our production workflows. Third-party inspections welcome at any stage—we maintain full traceability from raw material receipt through final dispatch.

Performance Testing

Load testing facilities validate connection capacities. Torque verification ensures bolted joints achieve specified preload. You receive complete documentation packages including NDT reports, coating certificates, and calibration records.

Project Cases

Shenyang Dongta Cross-Hunhe River Bridge (18,000 tons)

We engineered and fabricated the primary steel truss structure for this landmark infrastructure project, spanning 68 meters across the Hunhe River. The design incorporated weathering steel and advanced swivel construction technology, completing installation 25% faster than conventional methods while meeting strict traffic loading requirements.

Jingha Expressway Expansion – Service Bridge Systems

Our long-span truss beams provided the structural framework for multiple pedestrian and utility bridges across highway sections. The open-web design accommodated extensive utility piping while the modular construction minimized traffic disruptions during installation.

Large-Scale Logistics Warehouse Hub (3,000,000 m² annual capacity)

A major EPC contractor selected our 55-meter clear-span trusses for an automated storage facility. The column-free design enabled robotic ASRS systems to operate without obstructions, while pre-fabrication reduced on-site construction time by 40%.

These projects demonstrate our capacity to deliver complex engineering solutions on schedule, backed by 60+ landmark installations and a 70% client retention rate.

 

 

Compliance & Certifications

Manufacturing Standards

· ISO 3834: Welding quality requirements for steel structures

· ISO 9001: Quality management systems

· ISO 14001: Environmental management

· ISO 45001: Occupational health and safety

Structural Design Codes

· AISC 360: Specification for Structural Steel Buildings (USA)

· EN 1993 (Eurocode 3): Design of steel structures (EU)

· AWS D1.1: Structural welding code

· EN 1090: Execution of steel structures and aluminum structures

Material Compliance

· ASTM A572: High-strength low-alloy structural steel

· JIS G3106: Rolled steels for welded structures

· GB/T 1591: High-strength low-alloy structural steels

Coating & Protection

· ISO 12944: Paints and varnishes – Corrosion protection (C4-C5 environments)

Our Class I Steel Structure Professional Contracting Qualification and National High-Tech Enterprise status validate our technical capabilities for international projects.

FAQ

Q: How do you control deflection for spans over 50m?

A: We fabricate beams with calculated pre-camber to counteract dead and live load sagging. FEA analysis defines the exact camber profile for your loading requirements.

Q: Bolted or welded connections better for long-span trusses?

A: Bolted connections are preferred for field assembly. They lower labor costs, avoid weather-related welding issues, and allow easy torque-based quality checks. We supply fully traceable AISC-certified high-strength bolts.

Q: Can these beams reach high fire-resistance ratings?

A: Yes. Intumescent paint or spray-on fireproofing (SFRM) can achieve up to 4-hour fire ratings per local building codes.

Q: How do you deal with truss thermal expansion?

A: Slotted holes and expansion joints at bearing supports accommodate length movement, preventing stress buildup and buckling from temperature changes.

Q: What maintenance schedule for galvanized trusses?

A: Hot-dip galvanized trusses need little maintenance for 25+ years in typical industrial settings. Inspect first at year 5, then every 7–10 years to check coating condition.

Q: Do you provide BIM models for construction coordination?

A: We provide complete BIM files, 3D drawings and erection step plans compatible with common project management software for smooth coordination.

Q: Can you handle international projects?

A: We export structural parts for Belt and Road and global mining projects. We offer full English documentation, compliance with EN 1090 & AWS D1.1, and full export logistics support..

Contact Us

Ready to talk through your Long-Span Steel Truss Beam project and long-span structural demands? Our engineering team will assess your project details and deliver customized technical solutions matching your load requirements, site limitations and construction schedule..

Get in touch today: Ava@zd-steels.com