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Custom Engineered Steel Structure Bridges – Truss, Arch, and Box Girder Designs
APPLICATION
Bridges and Infrastructure Projects: Steel construction is widely used in steel structure bridges, highways, and energy infrastructure projects due to its ability to meet complex engineering demands with high strength, precision, and design flexibility.
Industrial factories and plat production:Heavy-duty steel beams such as H-beams, I-beams, and steel plates are widely used in high load-bearing industrial applications. They are ideal for equipment platforms, production lines, and factory flooring systems, providing excellent structural strength and stability.
Warehouses and Logistics Centers: Prefabricated steel structure buildings enable fast and cost-effective construction of warehouses and distribution centers. With modular components, they allow for efficient on-site assembly while ensuring high structural strength, durability, and long service life.
Commercial and public buildings: Prefabricated steel frames provide a modern and flexible solution for commercial construction, including office buildings, shopping centers, and sports facilities. They offer efficient installation, structural reliability, and adaptable design options.
PRODUCT DETAIL
Core steel structure products for bridge construction
1. Main steel structure bridge type
| Product Type | Specification Range | Core Function | Central America Adaptation |
| Truss Bridge | Span: 15–120 m | Long-span load-bearing structure for vehicles, pedestrians, and light rail | Seismic bolted joints; modular prefabrication for easy transport; anti-corrosion coating for tropical climate |
| Arch Bridge | Span: 20–150 m | Efficient load transfer through arch structure for heavy traffic and urban use | Hot-dip galvanized steel; seismic bearings; modular segments for remote installation |
| Box Girder Bridge | Span: 10–100 m | High torsional and bending resistance for highways and elevated roads | Seismic-optimized design; welded/bolted hybrid joints; prefabricated sections for transport efficiency |
| Pedestrian / Cycling Bridge | Span: 5–50 m | Lightweight structure for pedestrian and bicycle access | Anti-slip deck; corrosion-resistant coating; fast modular assembly for tropical environments |
2. Enclosure system products (weatherproof + anti-corrosion)
| Product Type | Specification Range | Core Function | Central America Adaptation |
| Roof Deck Panels | C12×25 – C18×35, hot-dip galvanized (Zn ≥ 85 μm) | Supports bridge decking and protective roof systems; designed for high wind resistance (Typhoon Level 12) | Anti-corrosion coating for tropical climates; lightweight modular design for easy transport and fast installation |
| Side Wall Panels | Z10×22 – Z16×28, salt spray resistance >1000 hrs | Provides weather protection for pedestrian walkways and maintenance areas | Ventilation design to reduce condensation; enhanced corrosion resistance for hot and humid environments |
| Bracing & Support System | Φ14–Φ18 galvanized round steel + L60×6 angle steel | Improves lateral stability and wind/seismic resistance | Seismic-optimized bolted/welded connections; durable anti-corrosion performance for coastal climates |
3. Supporting auxiliary products (localized construction adaptation)
| Product Type | Specification Range | Core Function | Central America Adaptation |
| Expansion Joints | Modular steel/rubber joints, 50–200 mm width | Absorbs thermal expansion and contraction in bridge structures | Seismic-resistant design with corrosion-proof materials for humid tropical environments |
| Guardrails & Safety Barriers | Steel channel/tubular sections, height 900–1200 mm | Ensures vehicle and pedestrian safety; protects bridge edges | Anti-corrosion coating with UV resistance; suitable for high rainfall and coastal salt exposure |
| Access Ladders & Platforms | Galvanized steel ladders (Φ32–Φ50) and platforms (L50×5) | Provides safe inspection and maintenance access | Lightweight modular design for fast installation; corrosion-resistant for tropical climates |
| Drainage Systems | Steel grates (Φ12 bars) and C-channel gutters (100×50–150×75) | Prevents water accumulation and ensures efficient drainage | Hot-dip galvanized or coated finish for heavy rainfall and storm resistance |
| Lighting & Utility Supports | Steel poles, brackets, cable trays | Supports lighting, signaling, and utility installations | Pre-coated anti-corrosion finish; modular design for easy replacement in remote areas |
STEEL STRUCTURE PROCESSING
Cutting
Plasma and flame cutting are utilized for thick steel plates, and precision shearing machines are employed for thin plates. This helps assure the accurate dimensions with clean smooth cut edges.
Forming
Cold bending and press brake forming are employed for purlins, gutters, and flasher-stocks, whilst rollers are used for circular members and round supports. This process guarantees the stability of dimension and strength of structure.
Welding
For H-beams and heavy columns, the submerged arc welding is performed and for connection plates and structural joints the manual arc welding is applied. Every weld is subject to rigorous testing to guarantee complete structural soundness and dependability.
Hole Processing
CNC drilling is employed to ensure perfect alignment of bolt holes, and punch press machines are used for small batch productions. High positioning accuracy guarantees the smooth and efficient installation on site.
Surface Treatment
Shot blasting or sand blasting is applied to rust and surface impurities removal, then grinding of weld seams and surface finishing. Then, the bolt and the rest of the assembly are hot-dip galvanized for superior corrosion protection and long term strength.
Trial Assembly
The columns, beams, and bracing systems are pre-assembled to check the fit and accuracy of the structure. Dimensional inspection is performed with professional measuring tools to meet design specification. Components are dismantled for safe packaging and shipping after inspection.
STEEL STRUCTURE TESTING
| Test Type | Standard(s) | Purpose / Notes |
| Structural Load Test | ASTM A370, EN 10002 | Verifies that beams, trusses, and girders can safely withstand vehicle, pedestrian, and dynamic bridge loads |
| Weld Quality Inspection | AWS D1.1, ISO 5817 | Ensures welded joints meet international standards, critical for truss and box girder connections |
| Corrosion Resistance Test (Salt Spray / Fog) | ASTM B117, ISO 9227 | Evaluates corrosion resistance in coastal and tropical environments |
| Coating Adhesion Test | ASTM D3359, ISO 2409 | Confirms coating and galvanizing adhesion to prevent peeling under thermal changes |
| UV & Weathering Resistance | ASTM G154, ISO 4892 | Tests resistance to sunlight exposure, preventing fading and surface degradation |
| Humidity & Heat Resistance | ASTM D2247 | Ensures coating performance under high humidity and temperature cycles |
| Impact & Handling Test | ASTM D2794, ISO 6272 | Verifies coating durability during transport, handling, and installation |
| Dimensional & Straightness Check | ISO 8501, EN 1090 | Ensures prefabricated components meet design tolerances for accurate assembly |
| Fatigue & Vibration Test | ASTM E466, ISO 12107 | Evaluates long-term performance under traffic, wind, and dynamic loads |
| Anchor & Bolted Connection Test | ASTM F606, EN 14399 | Confirms safety and strength of bolted joints, anchors, and seismic connections |
SURFACE TREATMENT
PACKAGING AND SHIPPING
All the parts of steel bridge are packed with application of international export packaging standards, which make sure the package is safe and stable and prevention from rust in long distance transportation.
The main load-bearing elements with large cross-sections of beams, trusses, girders and so on are ...... tightly bound together with steel straps and fortified with wood or metal on both sides so they won’t be deformed under the effect of loading and ocean transporting.
Loading plans according to certain optimization criteria are generated under the model with 20ft/40ft containers and flat racks or bulk shipping are used depending on the size of the components.
There are adaptable delivery solutions offered (FCL, LCL, from bulk), which is able to meet your requirements of security and promptness delivery to worldwide project sites.
WHY CHOOSE OUR STEEL STRUCTURES?
Built to Last: 50+ year service life with anti-corrosion treatment, low maintenance.
Strong & Flexible: Superior strength-to-weight ratio for large spans (up to 40m+) and custom designs.
Fast & Cost-Saving: Prefabricated components cut on-site time by 40–60%, reducing labor costs.
Eco-Friendly: 100% recyclable steel, low carbon footprint.
Secure Delivery: Strict waterproof/rust-proof packaging + stable shipping—components arrive intact.
Ready to start your project?
FAQ
Q1:Are you trading company or manufacturer ?
A: We have our own steel structure, steel sheet and sandwich panel manufacturing factories. Welcome to our company to see our products and discuss your project.
Q2:Can you provide on-site installation service?
A: We can provide Installation guide service based on customers’ request. The shop drawing, installation drawing and video will send to client to help the site erection. If need, our engineer will come to site to guide the installation.
Q3:What is the delivery time?
A: It depends on the quantities of order. Generally, the delivery time will be within 25 to 60 days.
Q4:How can I get a quotation for my project?
A:Pls no hesitate to send me message here or Email me. I will reply to you ASAP. Welcome to contact me for your building!
Q5:Can you do the design for us?
A:Yes, we can design diverse drawings as your requirements. By using AutoCAD, Tekla Structures, SAP2000 and STAAD Pro, etc. to design buildings such as warehouse, workshop, office, school, apartment and exhibition hall.
Q6:What about packaging and shipping?
A:The package of steel structure material is steel pallet. After loading into the containers, they will be sent to the Qingdao Port and transported by Sea.
Q7:When can I get the price?
A:Please no hesitate to send me message here or Email me. I will reply to you ASAP. Welcome to contact for your building!
Address
Bl20, Shanghecheng, Shuangjie Street, Beichen District, Tianjin, China
Phone
+86 13652091506
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