Steel trusses are specialized, core load-bearing components designed for buildings with exceptionally large spans. Unlike conventional solid-web steel beams, they consist of top chords, bottom chords, and web members assembled via welding or high-strength bolting into a geometrically stable system. Fabricated primarily from high-quality Q235B or Q355B structural steel, the product range includes planar trusses, spatial tubular trusses, trapezoidal trusses, and complex curved trusses. Leveraging the principle of axial load distribution, they support the full vertical loads of large-span roofs, floors, ceilings, and equipment while simultaneously transferring horizontal wind and seismic forces. They serve as the premier, cost-effective structural framework for achieving column-free spaces spanning up to 100 meters. All fabrication processes strictly adhere to national standards for steel structure construction and acceptance, ensuring transparent specifications and verifiable mechanical properties.
As a specialized manufacturer and one-stop supplier of steel structures, HAISHENG offers both ready-stock and custom-fabricated steel trusses. We welcome your inquiries and orders.
1. Capability for Ultra-Large Spans
Conventional steel beams and concrete beams face strict span limitations, often requiring numerous intermediate columns that compromise the layout and utility of venues and factories. Steel trusses utilize optimized structural mechanics to easily achieve column-free spans ranging from tens to over a hundred meters. They perfectly meet the design requirements for open, expansive spaces in exhibition centers, stadiums, and large industrial plants, fundamentally resolving industry challenges associated with dense column placement and low space utilization.
2. Lightweight Design
For a given load capacity and span, steel trusses are significantly lighter than solid-web steel beams or concrete roof beams. They impose minimal additional load on the building's main steel frame and foundation, eliminating the need for thickened foundations or enlarged beam and column cross-sections. This significantly reduces initial civil engineering costs, offering substantial budget savings for general contractors and project owners—benefits that are particularly pronounced in ultra-long-span projects.
3. Uniform Axial Load Distribution
Conventional load-bearing components primarily resist bending forces, making them susceptible to localized stress concentrations and increasing the risk of deflection or cracking over long-term use. All members of the Steel Truss system are subjected solely to axial tension and compression loads, ensuring uniform stress distribution without weak points. It offers outstanding resistance to deflection, vibration, and fatigue; it resists bending or sagging even under perennial exposure to wind, snow, and cyclic equipment loads. It meets stringent seismic safety standards for public buildings and presents minimal structural risks after handover.
4. Open-Web, Transparent Structure
Solid beams and columns obstruct natural indoor light and limit the layout of ceiling-mounted equipment; their monotonous forms often fail to suit landmark architectural designs. In contrast, the open-web truss configuration allows for excellent light and airflow, facilitating the installation of HVAC, fire safety systems, and overhead utilities. It also supports the fabrication of curved, free-form, and angular geometries, making it ideal for artistic architectural designs such as cultural landmarks, airport terminals, and tensile membrane structures, while balancing structural safety with aesthetic appeal.
5. Factory Prefabrication and Dry Assembly
Long-span concrete roofs require formwork, casting, and lengthy curing periods; they are highly susceptible to weather-related delays (such as rain or snow), which can push back overall completion schedules. All components are prefabricated in standardized segments at the HAISHENG workshop, with dimensions and opening precision controlled via CNC technology throughout the process. On-site assembly relies solely on bolting—eliminating wet processes and weather constraints—which more than doubles construction speed, making it perfect for high-priority public and industrial projects with tight delivery deadlines.
6. Versatile Anti-Corrosion and Fireproofing Options
Coastal salt spray, open-air facilities, and high-dust workshops can easily cause steel structures to fail due to corrosion, leading to frequent maintenance and rising operational costs. The Steel Truss system offers customizable protective treatments, including hot-dip galvanizing, heavy-duty anti-corrosion coatings, and fire-resistant sprays. The finished products are salt-spray resistant and durable against aging; they resist rust and deformation during long-term outdoor use, significantly extending the building's service life and reducing future maintenance and refurbishment costs.
7. Demountable and Recyclable
Concrete and solid steel beams require cutting and demolition for modifications and cannot be reused, resulting in significant waste during building expansions or functional retrofits. The nodes utilize bolted connections, allowing for partial disassembly and adjustment during future retrofitting or spatial reconfiguration. The components are fully reusable, generating minimal construction waste; the system complies with acceptance standards for green prefabricated and ultra-low energy buildings, offering a lower comprehensive cost over the entire lifecycle.
The steel truss serves as the primary load-bearing structure for ultra-long-span roofs and floors, supporting dead loads, rain and snow loads, and suspended electromechanical equipment. It works in tandem with the overall framework to resist lateral forces from earthquakes and strong winds. It eliminates the limitations of traditional structures—such as insufficient span capabilities and excessive columns—while serving as a framework for elevated utility spaces, pedestrian skybridges, and tensile membrane supports. It reinforces weak structural points in large-span areas, ensuring decades of safe and stable building performance.
1. Large-scale Industrial Steel Structures: Long-span manufacturing plants and logistics warehouses; provides column-free, open spaces to accommodate large equipment and cargo handling.
2. Large-scale Public Venues: Stadiums, exhibition centers, high-speed rail stations, airport terminals, large retail complexes, and theaters; creates unobstructed spaces for viewing and circulation.
3. Municipal, Landscape, and Specialty Projects: Truss-based pedestrian bridges, unique architectural landmarks for cultural tourism, and support trusses for tensile membrane structures; balances structural safety with urban aesthetics.
4. Renovation and Expansion Projects: Vertical extensions for aging factories and public buildings; the lightweight steel truss adds no significant load to existing foundations and facilitates convenient construction.
1. Unrivaled Span Capability: Compared to standard solid-web steel beams or concrete beams, steel trusses offer span capabilities several times greater than traditional components. They fundamentally resolve issues associated with traditional structures—such as span limitations, excessive intermediate columns, and cramped spatial aesthetics—making them the optimal structural system for large-span buildings.
2. Significant lightweight advantages and cost-effectiveness: For the same load-bearing capacity, it require less steel and have a lower self-weight. This effectively reduces the load on foundations and primary structures, lowers overall project investment, and results in a more favorable total cost compared to traditional long-span load-bearing structures.
3. Superior structural mechanics and higher safety redundancy: Unlike standard structural members that primarily undergo bending, truss members mainly experience axial forces. This maximizes material utilization, ensures balanced load distribution, and enhances fatigue and vibration resistance. The structure resists deformation and damage under long-term loads, offering greater structural safety.
4. Exceptional adaptability in space and form: Compared to bulky concrete roof structures or solid steel beams, it feature an open, airy design and flexible geometry. They are suitable for curved, arched, and complex streamlined architectural forms, harmonizing structural safety with aesthetics while offering both decorative and practical value.
5. Enhanced assembly-based construction and shorter schedules: Unlike the complex formwork, pouring, and curing processes required for long-span concrete roofs, they are prefabricated in factories and rapidly assembled on-site. This "dry" construction method eliminates curing times, significantly boosting efficiency and meeting the tight scheduling demands of major projects.
6. Eco-friendly, durable, and superior lifecycle value: Construction generates no waste or pollution, and the steel is 100% recyclable. The structure is easy to maintain and modify, offering a long service life. Compared to traditional long-span structures, it entails lower lifecycle operation and maintenance costs and delivers better overall benefits.
1. Controllable Raw Material Quality: Original material certificates are provided for all Q235B and Q355B steel products. Each truss batch comes with a comprehensive mechanical testing report; third-party non-destructive testing (NDT) can be arranged upon request, and all parameters fully comply with national standards.
2. Flexible Customization & Delivery: We support custom fabrication based on client drawings—including planar, tubular, and complex curved trusses—with fixed-length sectional prefabrication and one-stop anti-corrosion and fireproofing services. Delivery schedules are strictly managed, with priority production available for urgent orders.
3. Integrated Support Services: We offer bundled shipments including steel bracing, connectors, and enclosure components, reducing the coordination costs associated with managing multiple suppliers. Our professional technical team provides free consultations on initial structural selection and load verification.
4. Standardized Export Packaging: Large trusses are packaged in sections with rust-proof wrapping, reinforced on wooden pallets, and sealed for waterproofing to prevent damage or deformation during sea or land transport. Inspection documentation is provided in both Chinese and English to ensure seamless clearance for domestic and international projects.
5. After-Sales Technical Support: Installation reference drawings are included with shipments. Technical engineers provide instant online answers regarding structural or assembly issues encountered on-site, and offer professional guidance for future modifications or structural reinforcement.
A: They are recommended for projects requiring column-free open spaces—such as factories, stadiums, and landmark buildings—with single spans exceeding 15 meters. Standard spans range from 20 to 80 meters, while custom designs can reach over 100 meters, far exceeding the load-bearing limits of standard steel beams.
A: For coastal projects, we recommend hot-dip galvanizing combined with a heavy-duty anti-corrosion topcoat. This significantly enhances salt-spray resistance, effectively preventing long-term outdoor corrosion and extending the truss's service life.
A: For equivalent long-span applications, the low self-weight of steel trusses reduces foundation costs and material usage; overall costs for civil works and the main structure can be cut by 15%–30%, while construction time is also shortened.
A: Yes, full-scale custom fabrication is available. We can manufacture curved, angled, and complex spatial curved tubular trusses based on architectural drawings, making them suitable for projects with unique shapes, such as cultural tourism landmarks and airport terminals.
