Bridge Construction Structure

1. Raw Material Preparation: 

Selection of high-grade steel coils/plates per bridge-specific standards to ensure strength and corrosion resistance.

2. Forming: Precision 

roll-forming or press-bending into round, square, or rectangular profiles using advanced equipment.

3. Welding: 

Submerged Arc Welding (SAW) for thick-wall tubes or Electric Resistance Welding (ERW) for high-precision seams—ensuring structural integrity.

4. Sizing & Straightening: 

Calibration to tight dimensional tolerances for roundness, straightness, and width consistency, enabling seamless assembly.

5. Heat Treatment: 

Normalizing, quenching, and tempering to enhance mechanical properties—critical for high-yield steel tubes.

6. Surface Treatment: 

Shot blasting, priming, and painting (or weathering steel finishing) to resist humidity, salt spray, and desert erosion.

7. Testing & Inspection: 

Dimensional checks, ultrasonic testing (UT), magnetic particle inspection (MPI), weld quality verification, and impact testing.

8. Finishing: 

Cutting to standard or custom lengths, with end beveling for easy on-site welding and integration.

Exceptional Load-Bearing Capacity: 

High-strength steel grades support heavy highway/railway loads and long-span bridge designs.

Corrosion & Climate Resistance: 

Weathering steel variants (ASTM A588/A709 Gr. 50W) develop a protective patina, while coated options withstand coastal salt spray and tropical humidity.

Structural Stability: 

Rigorous welding and heat treatment ensure resistance to dynamic stresses (traffic, wind, seismic activity).

Versatile Profiles: 

Round, square, and rectangular tubes adapt to diverse bridge components (piers, bracing, trusses).

Easy Fabrication & Installation: 

Precision dimensions enable seamless welding and assembly, reducing on-site construction complexity.

Long-Term Durability: 

Low-maintenance design minimizes upkeep costs, ideal for remote bridge projects across target regions.

Our Bridge Construction Steel Tubes comply with global and regional infrastructure standards:

• Primary Standards: ASTM A709, EN 10025, JIS G3106, AASHTO
• Design Standards: Eurocode 3, BS 5400
• Fabrication & Welding: AWS D1.5, EN 1090, ISO 3834
• Quality Management: ISO 9001, ISO 45001, ISO 14001
• Regional Compliance: SASO (Middle East), SONCAP (Africa), SNI (Indonesia), TIS (Thailand), ISIRI (West Asia)
• All orders include material test certificates (MTC), weld reports, and third-party inspection documents for project approval.

Packaging

• Steel tubes are capped with plastic ends to prevent rust, dust, and debris accumulation.
• Bundled with high-strength steel straps and wrapped in moisture-proof film for humid regions (Southeast Asia/Africa) and anti-corrosion paper for deserts (Middle East).
• Large-diameter tubes (OD ≥300mm) are shipped individually with protective steel brackets to avoid deformation.
• Placed on ISPM 15-certified wooden pallets for international shipping compliance.
• Clear labeling includes product name, material grade, dimensions, batch number, and handling instructions.

Shipping

• Logistics Partners: Maersk, CMA CGM, Aramex, and regional heavy-cargo carriers for inland delivery to bridge construction sites.
• Delivery Coverage: Port-to-port, door-to-door for major cities, and tailored solutions for remote infrastructure projects.

RFQ Question: Do your bridge steel tubes resist coastal salt spray for long-span highway bridges?

Answer: Yes, our ASTM A709 Gr. 50W weathering steel tubes develop a protective patina, resisting salt spray and corrosion. They meet AASHTO standards and include corrosion test reports for project approval.

RFQ Question: Need high-strength tubes for railway bridge piers in tropical regions—what grade do you recommend?

Answer: We recommend ASTM A572 Gr. 50 high-strength tubes, resistant to tropical humidity and heavy railway loads. They offer excellent load-bearing capacity and comply with regional structural standards.

RFQ Question: Are your square bridge tubes suitable for seismic-prone regions with temperature fluctuations?

Answer: Yes, our EN 10025-4 S460 square tubes offer superior ductility and stability for seismic zones. They adapt to extreme temperature changes and meet EN 1090 fabrication standards.

RFQ Question: Can you supply custom-profile tubes for rural bridge trusses (low maintenance)?

Answer: Our ASTM A588 weathering steel tubes are ideal for rural bridges—they require minimal maintenance and resist tropical rains and desert erosion. Custom profiles (round/square) are available to match design needs.

RFQ Question: What grade is best for bridge bracing tubes in desert regions (extreme heat)?

Answer: ASTM A36 carbon steel tubes withstand 55°C+ desert heat and wind stresses. They’re lightweight yet rigid, suitable for bracing systems, and comply with SASO regional standards.