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Product Overview: Prefabricated closed steel box girder bridge, economical material usage, fast construction, high torsional stiffness, 100-year service life.

• Uses: Highway overpasses, railway crossings, urban viaducts
• Span: Single span 30–120m; continuous multi-span up to 200m
• Standard: AASHTO LRFD full design compliance
• Core Edge: Closed trapezoidal beam saves steel & extra lateral bracing
• Material: High-strength steel, yield strength up to 70 ksi
• Maintenance: Low daily maintenance demand

Product Overview: Modular prefabricated steel box girder bridge, fast installation, high torsional rigidity, fully compliant with global international standards.

• Application: Highway overpasses, railway crossings, urban viaducts, pedestrian bridges
• Structure: Single/multi-cell trapezoidal box girder with inclined webs & orthotropic deck
• Span: 20–80m modular segments, spliceable for continuous spans
• Material: ASTM A709 / EN 10025 high-strength structural steel
• Service Life: 100 years, low maintenance
• Quality: ISO 9001 certified, full material traceability

Product Overview: Prefabricated steel box girder bridge for medium & long-span highway, railway infrastructure, featuring outstanding flexural and torsional rigidity.

• Design Standard: AASHTO LRFD Bridge Specifications, applicable for straight & curved box girders
• Welding Standard: AWS D1.5 Bridge Welding Code, shop & field welding certified
• Execution Grade: EN 1090-2 EXC4 top class for high-seismic & major critical structures
• Structure Type: Inclined web trapezoidal closed box beam, uniform load distribution
• Span Scope: 10m–300m single span, adaptable for multi-lane road & pedestrian bridges
• Material: ASTM A709 high-strength structural steel, yield strength up to 70 ksi

• Design Standard: Fully conforms to AASHTO LRFD (10th Edition) for reliable structural safety
• Raw Material: ASTM A709 Grade 50W weathering high-strength steel
• Anti-Corrosion Coating: Heavy hot-dip galvanized finish complying with ISO 1461 / ASTM A123
• Structural Type: Box girder with high torsional stiffness & balanced load bearing performance
• Service Lifespan: 100-year design life, minimal routine maintenance
• Load Capacity: Supports HL-93 highway loads, single-lane bearing ≥70 tons
• Application Scenarios: Highway bridges, railway crossings, pedestrian overpasses, industrial access bridges

• Product Name: Modular Steel Box Girder Bridge System – Fast Installation, Easy Maintenance
• Prefabricated Construction: Factory‑manufactured modules for rapid on‑site assembly
• Rapid Installation: Installed in days instead of months, reduce construction time
• Minimal Traffic Disruption: Overnight installation, lower road closure impact
• Low Maintenance: Hot‑dip galvanized high‑strength steel for long‑term durability
• Cost Efficiency: Save site labour and overall lifecycle cost
• Customizable: Single / multi‑cell, spans 10‑100+ metres
• Proven Performance: Compliant with AASHTO HS20‑44 and global standards
• Applications: Highway bridges, urban flyovers, railway viaducts, industrial access, emergency replacements

• Product Name: Q345B/Q460C Steel Box Girder Bridge – Certified to ASTM/BS/GB Standards
• Material Options: Q345B, Q460C high‑strength bridge structural steel
• Standard Compliance: Complies with ASTM, BS 5400, GB/T 714 for international projects
• Structural Performance: Excellent flexural and torsional stiffness for highway, railway & urban flyovers
• Span Capability: Single spans 10‑300 metres, customised per project
• Plate Thickness: Main plates 12‑30mm, secondary plates 10‑20mm
• Seismic & Wind Resistance: Resists Grade 8 seismic loads, Grade 12 wind loads
• Design Life: 100‑year service life with proper maintenance

• Product Definition: Long-span prefabricated steel box girder bridge customized for expressway and municipal crossing infrastructure projects.
• Super Span Capacity: Single span reaches 50m–100m+; continuous total span up to 300m+.
• Superior Structural Performance: Closed trapezoidal box section ensures excellent structural stiffness, overall stability and uniform load distribution.
• **Multi-Scenario Application Perfectly crosses rivers, railways, existing roadways and urban intersections with minimum site disruption.
• Authoritative Standard Compliance: Fully engineered per AASHTO LRFD specifications and fabricated under AWS D1.5M welding code.
• Efficient Construction: Full factory prefabricated modules support rapid on-site assembly and greatly reduce traffic interruption.

• Professional Manufacturer: Leading Chinese steel bridge factory with 15+ years of international export experience.
• Global Certifications: Compliant with ISO 9001, EN1090, AWS D1.5M and AASHTO LRFD design standards.
• Core Product: Custom prefabricated box girder steel bridge for highway overpass, road interchange and infrastructure projects.
• Strong Production Capacity: Annual output over 100,000 tons, supporting multiple large-scale bridge projects simultaneously.
• Global Export Experience: Successfully supplied to North America, Europe, Australia and Southeast Asia with stable on-time delivery.
• Cost-Effective Solution: Premium international standard quality with direct factory price, no middleman markup.

• Premium Material: Built with ASTM A709 high-strength structural steel, the standard-grade material for North American bridge engineering.
• Multiple Steel Grades: Available in Grade 36, 50, 50W, HPS 50W, HPS 70W, with yield strength ranging from 36 ksi to 70 ksi.
• Weather Resistance: "W" series weathering steel forms a protective patina, supporting up to 120 years of unpainted service.
• Superior Structure: Closed trapezoidal box girder section provides excellent torsional rigidity and long-term fatigue resistance.
• Dual Certification: Fully designed per AASHTO LRFD standards and fabricated under AWS D1.5M welding code.
• Low Lifecycle Cost: Eliminates repeated painting and maintenance work, greatly reducing long-term operating expenses.

• Installation Speed: Up to 60% faster on-site erection vs. conventional cast-in-place or stick-built steel structures.
• Design Code: Fully engineered to AASHTO LRFD specifications.
• Welding Standard: Fabricated under strict AWS D1.5M Bridge Welding Code.
• Delivery Format: Factory-assembled modules, shipped ready for bolted connection on-site.
• Design Lifespan: 75–100 year design life with minimal maintenance demand.

• Dual Authoritative Certification: Fully designed per AASHTO LRFD20 standard and fabricated in strict accordance with AWS D1.5M Bridge Welding Code.
• Superior Structural Performance: Closed trapezoidal box girder structure delivers outstanding torsional stiffness and uniform load distribution.
• Fast On-site Installation: Full factory prefabricated modular design greatly shortens construction period and minimizes site traffic disruption.
• Long Service & Low Maintenance: Adopts high-strength steel and premium anti-corrosion coatings to reduce long-term maintenance costs.
• Wide Application: Suitable for highway bridges, railway overpasses, pedestrian bridges and industrial access bridges.
• Full Customization: Span, width, girder height, steel grade and connection methods are all customizable for different project conditions.

• Compliance: Fully engineered to AASHTO LRFD Bridge Design Specifications.
• Certification: Fabricated under strict AWS D1.5M Bridge Welding Code.
• Structural Advantage: Closed-section box girder design delivering superior torsional rigidity and fatigue resistance.
• Construction Efficiency: Shop-prefabricated modules enable accelerated on‑site installation with minimized traffic disruption.
• Durability: High‑strength steel with customized corrosion protection for long‑term performance in diverse environments.
• Versatility: Suitable for highway overpasses, railway crossings, and heavy‑load industrial bridges worldwide.