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4mm S350 Hot Galvanized Composite Steel Bridge Decking for Highway Permanent Formwork

  • 4mm S350 Hot Galvanized Composite Steel Bridge Decking for Highway Permanent Formwork
  • 4mm S350 Hot Galvanized Composite Steel Bridge Decking for Highway Permanent Formwork
  • 4mm S350 Hot Galvanized Composite Steel Bridge Decking for Highway Permanent Formwork
  • 4mm S350 Hot Galvanized Composite Steel Bridge Decking for Highway Permanent Formwork
  • 4mm S350 Hot Galvanized Composite Steel Bridge Decking for Highway Permanent Formwork
Place of Origin China
Brand Name FASEC
Certification ISO 9001; CE; AS/NZS 1397; ASTM A653; MTCs
Model Number Steel Bridge Deck Forms
Minimum Order Quantity 1000 MT
Price USD 12-20/SQM
Packaging Details Sea Freight (Container/Bulk Vessel)
Delivery Time 10-30 Days
Payment Terms L/C, D/A, D/P, T/T
Supply Ability 2,000 – 5,000 MT/month
Product Details
Product Name Hot Galvanized Composite Steel Bridge Decking Application Highway Bridges, Box Girder Bridges, Urban Flyovers, Bridge Widening, Coastal Bridges, Industrial Access
Core Function Heavy-duty Permanent Formwork, Load-bearing Component Customization Customized To Customer Requirements
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Product Description
4mm S350 Hot Galvanized Composite Steel Bridge Decking is a high-performance stay-in-place formwork system specially designed for highway bridge slab construction. Made of S350 grade steel and precision formed to 4mm thickness, the deck serves dual functions: bearing fresh concrete, reinforcement and construction loads during pouring; after concrete hardening, it forms an integrated composite structure sharing traffic loads with the slab. The hot-dip galvanized layer provides reliable anti-corrosion capacity, adapting to severe working environments containing deicing salt and coastal salt mist. It becomes an ideal selection for infrastructure projects pursuing high construction speed, site safety, structural durability and economic benefits.
 

High-Strength S350 Steel – Reliable Structural Foundation​


The deck is cold-formed from S350 structural steel with minimum yield strength 350 MPa and tensile strength ranging 510–650 MPa. The high-grade material withstands heavy construction loads including steel reinforcement, plastic concrete and live load of 2.4 kN/m² with limited deflection.
 
The steel features favourable ductility (elongation ≥20%) and low-temperature impact toughness ≥34 J at -20°C, preventing brittle fracture under dynamic loads and ensuring stable performance in cold regions. Thanks to its high strength-to-weight ratio, designers can adopt thinner sections without lowering bearing capacity, reducing material consumption and overall dead load of the bridge.
 

Precision 4mm Thickness – Balanced Rigidity & Constructability​​


The 4mm nominal thickness strikes an optimal balance between structural stiffness and convenient field handling. Compared with thin-gauge decking requiring dense temporary supports, this product delivers outstanding bending stiffness and deflection control under heavy construction loads, allowing longer unsupported spans and cutting the quantity of temporary props.
 
Meanwhile, the 4mm plate maintains good machinability and weldability. Panels can be lifted and positioned via standard construction equipment, effectively accelerating on-site laying progress.
 

Hot-Dip Galvanized Coating – Long-Lasting Anti-Corrosion Protection​​


All panels are hot-dip galvanized per ASTM A653/A653M, coating grade G165 (Z600) with minimum coating weight 600g/m² on both sides. The zinc coating works as sacrificial protection, isolating base steel from moisture, chloride salt and industrial pollutants.
 
The coating layer features uniform thickness and strong adhesion, resisting peeling during forming and welding. No on-site repainting is required after installation. The service life of the deck can exceed 50 years even in humid coastal and winter salt-spray environments, minimizing routine maintenance work.
 

Composite Action Design – Steel and Concrete Load Together​​


A core engineering merit of the decking is reliable composite interaction with hardened concrete slabs. Profiled embossments on panels form mechanical interlock with concrete to transfer horizontal shear force at the joint interface.
 
After hardening, the steel deck undertakes tensile stress as slab reinforcement, improving overall flexural stiffness and load capacity. It enables thinner concrete slabs and smaller structural depth, creating a lighter and more economical bridge scheme while satisfying specified load standards.
 

Permanent Formwork System – Abandon Traditional Removable Shuttering​​


As stay-in-place formwork, it fully replaces reusable timber or steel formwork which requires installation, stripping and waste disposal. Panels are prefabricated to project dimensions and delivered with positioning marks.
 
Once fixed on supporting girders, the deck immediately forms a safe working platform for rebar arrangement and concrete pouring. Form stripping procedures are completely cancelled, shortening construction cycles, lowering labor cost and eliminating safety risks brought by shuttering assembly and dismantling at height.
 

Design Standard Compliance​​


The decking is designed and verified according to mainstream international specifications:
  • ASTM A653/A653M: Specification for hot-dip galvanized steel sheet
  • ASTM A924/A924M: General requirements for coated steel sheet
  • AISI S100: Standard for cold-formed steel structures
  • Eurocode 4: Design guidance for steel-concrete composite structures
Design stress is controlled within 0.725 of minimum yield strength. The maximum deflection under construction load is restricted to 1/180 of span or 13mm (whichever smaller), securing structural safety during construction and long-term service.
 

Optimized Installation Performance for Rapid Construction​​


The whole deck system is developed for efficient laying. Panels are lightweight for hoisting while remaining rigid against handling damage. Overlapping edges realize continuous force transfer and effectively avoid concrete leakage during pouring.
 
Panels can be tack-welded to supporting girders or fastened by self-drilling screws without complex bolt connection. Custom pre-punched holes and positioning marks are available on request to speed up alignment. Complete deck spans can be prepared for reinforcement arrangement within a short period, highly suitable for highway projects with tight schedules.
 

Obvious Lifecycle Cost Advantages​​


Though the initial procurement cost is higher than disposable formwork, the total lifecycle cost is greatly reduced:
  • • Save expenditure on formwork renting, purchasing and waste treatment
  • • Cut labor workload for erection and stripping
  • • Shorten construction period to advance project commissioning
  • • Eliminate long-term anti-rust painting maintenance
  • • Extend overall service life of the bridge structure
Practical project data shows permanent composite steel formwork can lower deck comprehensive construction cost by 15–25% and shorten the construction timeline by 20–30% versus traditional removable shuttering.
 

Improved On-Site Construction Safety​​


The deck surface forms a solid anti-slip working platform right after installation, lowering risks of falling and object dropping even under wet conditions. Without form stripping work, workers avoid high-altitude hazards when removing heavy temporary supports.
 
The immediate load-bearing capacity allows sequential construction of reinforcement and concrete, shortening the duration of high-risk operations and helping contractors reduce accident rates and insurance expenses.
 

Eco-Friendly Sustainable Construction Option​


The steel deck is 100% recyclable after service life, and galvanized coating contains no VOC harmful substances. Adopting permanent formwork avoids massive waste from discarded timber formwork and reduces landfill pressure.
 
The high strength-to-weight ratio of S350 steel cuts total steel consumption, lowering carbon emissions generated during production and transportation. Accelerated construction also reduces equipment exhaust and disturbance to surrounding residents, supporting LEED assessment and sustainable infrastructure development.
 

Strict Quality Control & Testing Standards


We implement full-process quality control supported by ISO 9001 certification. Raw steel coils are purchased from certified mills with complete traceability documents.
 
Each production batch conducts systematic inspection: chemical composition analysis, tensile, yield, elongation and impact mechanical tests, together with galvanized coating thickness detection. Dimensional inspection follows ASTM A924 tolerance requirements. MTRs and third-party inspection documents can be supplied upon client demand.
 

Wide Application Range


  • Highway Bridges: Steel and concrete girder highway crossing structures
  • Box Girder Bridges: Forming top slabs inside or above box girders
  • Urban Flyovers & Overpasses: Rapid deck construction for elevated roads
  • Bridge Widening & Rehabilitation: Deck reinforcement and renewal projects
  • Pedestrian Bridges: Durable deck for medium and light traffic passage
  • Industrial Access Bridges: Heavy-duty passage in port and mining zones
  • Coastal Bridges: Galvanized protection against saltwater erosion
     

Why Choose Our 4mm S350 Hot Galvanized Composite Steel Bridge Decking?

 
Feature Benefit
S350 Steel, 350 MPa Yield Strength Higher bearing capacity, lighter structural sections
4mm Plate Thickness Superior rigidity, longer unsupported construction spans
G165 Hot-Dip Galvanized Coating Over 50-year anti-corrosion performance, minimal maintenance
Full Steel-Concrete Composite Action Improve slab stiffness and overall structural performance
Permanent Stay-In-Place Formwork Cancel stripping work for faster and safer construction
ASTM & Eurocode Compliant Globally recognized standards for engineering approval
Prefabricated Panels with Marks Simplify layout and shorten field installation time
Recyclable Eco-Friendly Material Meet requirements of sustainable green construction

 

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Conclusion – Ideal Decking Solution for Modern Highway Infrastructure


4mm S350 Hot Galvanized Composite Steel Bridge Decking is an integrated deck construction system balancing high strength, rigidity and anti-corrosion capability. Combining S350 high-strength steel, 4mm optimized thickness and durable galvanized protection, it delivers prominent composite structural performance as permanent formwork for highway bridges.
 
It abandons the limitations of traditional temporary formwork, speeds up construction progress, controls total project cost and guarantees decades of low-maintenance service.
Want to boost efficiency for your highway bridge project? Our engineering team offers professional span design support, customized panel layout and logistics planning matching your milestones. We provide competitive quotations, seaworthy packaging and stable on-time delivery.
Choose innovation. Choose durability. Choose 4mm S350 Hot Galvanized Composite Steel Bridge Decking – Reliable Permanent Formwork for Highway Infrastructure.
 

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Tags:

prefabricated galvanized steel stairs

hot dip galvanized structure

steel road barrier