Steel Box Girder

Product Overview

The Steel Box Girder is a high-performance structural member with a closed box-shaped cross-section, offering excellent torsional stiffness and load-bearing capacity. Due to its superior strength, stability, and aerodynamic performance, steel box girders are widely used in bridges, long-span structures, and heavy-load applications.

Steel box girders are commonly applied in:
Highway and railway bridges
Urban viaducts and flyovers
Pedestrian bridges
Industrial steel structures
Long-span roof and platform systems
Special-shaped and curved structures
 

Product Attributes

Trade Information

● Unit of Measurement: Ton

● Price Range: 1300—3000 USD/T.The specific price needs to be provided with drawings and calculated based on material requirements, processing requirements, paint requirements, etc. 

● Minimum Order Quantity (MOQ): 100 Tons

Key Advantages

High Torsional Stiffness
Closed-section design provides excellent resistance to torsion.

Strong Load-Bearing Capacity
Efficiently supports heavy vertical and dynamic loads.

Long-Span Capability
Suitable for medium to long-span bridge and structural systems.

Slim & Aesthetic Profile
Box shape offers clean lines and modern architectural appearance.

Excellent Aerodynamic Performance
Reduces wind-induced vibration and fatigue.

Prefabricated Construction
Factory fabrication ensures high precision and fast installation.

Durable & Long Service Life
Advanced corrosion protection ensures long-term performance.

Technical Features & Production Process

1 Technical Features
High-strength structural steel: Q345B / Q355B / Q420 / ASTM / EN grades
Single-box or multi-box girder configurations
Orthotropic steel deck option available
Welded box section with internal stiffeners and diaphragms
Suitable for straight or curved alignments
Designed for fatigue, seismic, and wind loads
Designed according to international bridge and structural standards

2 Production Process
Structural analysis and box girder design
Shop drawing preparation and approval
Steel plate cutting and forming
Assembly and automatic welding
Non-destructive testing (UT / RT / MT)
Dimensional inspection and trial assembly
Surface treatment (sandblasting, painting, metallizing)
Packing, transportation, and site erection

Technical Specifications (Customizable)

Application Scenarios

Highway & Railway Bridges
Urban Flyovers & Viaducts
Pedestrian & Landscape Bridges
Industrial Platforms & Heavy Structures
Curved & Special-Shaped Steel Structures

Why Choose Us

Professional Steel Box Girder Manufacturer
Extensive experience in bridge and heavy steel structure fabrication.

Advanced Fabrication Facilities
CNC plate cutting, automatic welding, and precision assembly.

Strict Quality Control System
Material traceability, certified welders, and full NDT inspection.

Customized Engineering Solutions
Structural optimization for strength, durability, and cost efficiency.

Global Bridge Project Experience
Steel box girders supplied to infrastructure projects worldwide.

Reliable Delivery & Competitive Pricing
Factory-direct manufacturing ensures stable quality and on-time delivery.

  
Our Factory

Raw material storageMaterial cuttingAutomatic Welding

Manual weldingWeld seam treatmentDeep processing

PaintingDeliveryPackaging