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Steel Structure Modern Design Prefabricated Modular Steel Truss Bridge
Our steel structure bridge is manufactured with high-strength heavy steel materials and advanced welding technology. Featuring high structural rigidity, strong bearing capacity, seismic resistance and wind resistance, it adapts to complex terrain and harsh natural environments. Professional anti-corrosion, rust-proof and weather-resistant treatment greatly extends the service life. With fast on-site installation, low comprehensive maintenance cost and flexible design, our steel bridges are widely used for highway crossings, river spans, municipal engineering and industrial transit. Customized span, load standard and overall solution are available to meet diverse engineering project requirements.
Technical Specifications
Parameter
Specifications
Span Range (M)
50-160
Altitude Band (M)
15-50
Anti-corrosion Treatment
Galvanizing, spraying zinc, and spraying anti-corrosion paint
Fire-protection Rating
Higher than or equal to Level 2
Load Type
Enclosure materials, equipment, cranes, local natural conditions
Bending, welding, cutting, assembling, shot blasting and painting
Drawing Design
SAP2000/AutoCAD/PKPM/3D3S/TEKLA
Raw Material
Steel
Surface Preparation
Galvanization
Certificate
CE
Main Frame
Lightweight portal frame, multi story and high-rise frame, space frame
Material of Wall and Roof Panels
TDC51D, TS350GD
Design Lifespan
50 Years
Packaging and Delivery
Port
Qingdao, TianJin, and HeBei
Delivery Cycle
15-60 Days
Marketing Unit
Square meter
Supply Capacity
10,000 tons/month
Key Features
50-Year Lifespan & Long-Term Durability: Adopting high-quality structural steel (Q355q, Q420q, EN S355/S420 series) with excellent toughness and anti-fatigue performance, combined with professional anti-corrosion treatment (hot-dip galvanizing + epoxy zinc-rich primer + fluorocarbon topcoat) in line with ISO 12944 standards.
121+ Mph Wind Resistance: Optimized through professional wind tunnel tests and numerical simulation, the modular truss structure with triangular framework design effectively distributes wind load, meeting the anti-wind requirements of strong wind and hurricane-prone areas.
Modern Design & Modular Prefabrication: Adopting modern minimalist design with sleek and elegant appearance. Modular prefabrication mode realizes factory standardized production with high precision (error ≤±1mm), shortening construction period by 40%-60%.
High Efficiency & Cost-Saving: Modular design allows flexible combination and expansion, reducing material waste and transportation costs. Lightweight structure reduces foundation engineering investment.
Core Technology
Modular Truss Structure Technology
The triangular truss framework evenly distributes tensile and compressive forces, maximizing structural efficiency and load-bearing capacity. Suitable for medium and large-span projects (single span up to 91 meters) with standardized interfaces ensuring seamless assembly.
Precision Prefabrication & Welding Technology
Equipped with advanced CNC cutting, bending and welding equipment. Welding process complies with EN ISO 15614 and AWS D1.5 standards with 100% welding qualification rate and component precision meeting EN 10210/EN 10219 standards.
Three-layer anti-corrosion system (hot-dip galvanizing + epoxy zinc-rich primer + fluorocarbon topcoat) with galvanizing layer thickness of ≥80μm. Steel material selected with Z-direction performance (Z15/Z25/Z35) to avoid lamellar tearing.
Wind Resistance Optimization Technology
Combined with wind load analysis and flutter stability calculation, featuring streamline truss section and aerodynamic diversion device to reduce wind resistance and vortex-induced vibration.
International Standards & Key Parameters
Parameter Category
Key Specifications
International Standards
Certification
CE Certification (EXC3 Execution Class), ISO 9001, AWS D1.5
EU CPR (EU 305/2011), EN 1090-1/2, ISO 9001, AWS D1.5
Our prefabricated modular steel truss bridges are widely used in various infrastructure projects, including highway and railway crossings, urban overpasses, cross-river and cross-valley bridges, industrial zone passages, emergency rescue bridges, and remote area traffic links. They are especially suitable for areas with strong wind, high humidity, and complex construction environments.
Prefabricated Barns & Steel Frame Houses: Almost all pre-engineered long-span steel structure frame buildings are customized. Basic design requirements include snow load, wind load, seismic magnitude, column placement, project location, dimensions, and building purpose.
To ensure quality preservation, we provide standard sea container loading package, generally using 40HOT containers for loading and uploading.
Manufacturing Process
Processing strictly follows international standards (AISC 360, Eurocode 3, EN 1090)
Strict raw material inspection including material certificate verification and dimensional measurement
Lofting, marking and cutting by numerical control equipment for precise dimensions
Straightening and correction (thermal or mechanical) to ensure component flatness
Drilling and punching processes followed by assembly of main components
Professional welding (submerged arc welding, gas shielded welding) with UT/MT non-destructive testing
Secondary straightening and grinding with shot blasting to Sa2.5 derusting grade
Final marking and proper packaging for safe transportation and installation
