Floor Deck / Steel Decking
Composite & Galvanized Floor System
Profiled steel deck for concrete composite floors. Hot-dip galvanized (Z275), YX profiles, fire resistance up to 2H. Composite & fast-track options available.
Product Overview
Our steel floor deck systems serve as permanent formwork and tensile reinforcement for concrete composite slabs — eliminating the need for timber formwork and reducing on-site labor dramatically. The profiled steel sheet bonds with poured concrete via embossments, creating a strong composite floor diaphragm. Available in hot-dip galvanized (Z275) or galvalume (AZ150) finish.
We stock standard profiles including YX75-200-600 (3W), YX51-240-720, and YX51-305-915, with custom profiles available on request. All decking is manufactured from high-strength galvanized steel coil (G550/G350) and tested to AS/NZS 2327 and BS 5950-4 standards.
For fast-track projects where traditional concrete pouring is impractical, we also supply **galvanized composite deck panels (热镀锌免浇筑承重板)** — prefabricated panels with integrated stiffeners that span up to 6m without concrete topping. Ideal for platform floors, mezzanines, and temporary access decks requiring dry construction.
Technical Specifications
| Profile Types | YX75-200-600 (3W), YX51-240-720, YX51-305-915 |
| Material | G550 / G350 high-strength galvanized steel |
| Thickness | 0.75mm, 0.91mm, 1.0mm, 1.2mm (BMT) |
| Zinc Coating | Z275 (275 g/m²) standard, up to Z450 available |
| Fire Rating | Up to 2 hours (with appropriate concrete cover) |
| Span Capability | Single span 1.5m – 5.0m (unpropped) |
| Slab Thickness | 100mm – 200mm composite slab |
| Design Standards | AS/NZS 2327, BS 5950-4, EN 1994-1-1 |
| Sheet Length | Cut-to-length, up to 13.5m per sheet |
Available Open-Profile Deck Sections
| Profile | Rib Height | Rib Pitch | Effective Width | Thickness (BMT) | Unpropped Span* |
|---|---|---|---|---|---|
| YX51-200-600 | 51 mm | 200 mm | 600 mm | 0.8 – 1.2 mm | 2.0 – 2.8 m |
| YX51-240-720 | 51 mm | 240 mm | 720 mm | 0.8 – 1.2 mm | 2.2 – 3.0 m |
| YX51-305-915 | 51 mm | 305 mm | 915 mm | 0.8 – 1.2 mm | 2.4 – 3.2 m |
| YX65-170-510 | 65 mm | 170 mm | 510 mm | 0.9 – 1.2 mm | 2.6 – 3.4 m |
| YX65-185-555 | 65 mm | 185 mm | 555 mm | 0.9 – 1.2 mm | 2.8 – 3.6 m |
| YX75-200-600 (3W) | 75 mm | 200 mm | 600 mm | 1.0 – 1.2 mm | 3.0 – 4.0 m |
| YX76-305-915 | 76 mm | 305 mm | 915 mm | 1.0 – 1.2 mm | 3.2 – 4.2 m |
* Indicative unpropped spans for a 120 mm composite slab under 2.0 kN/m² live load. Final spans must be verified against project-specific slab design.
International Profile Cross-Reference
| Our Profile | Closest International Equivalent | Main Markets |
|---|---|---|
| YX51-305-915 | ComFlor 51 / Ribdeck 51 | UK, Ireland, Middle East |
| YX51-240-720 | Bondek-style 51 mm deck / Condeck HP | Australia, New Zealand |
| YX65-170-510 | ComFlor 60 / Ribdeck 60 | UK, Europe, Singapore |
| YX65-185-555 | SMD 60 / Holorib-style 60 mm | UK, Europe, UAE |
| YX75-200-600 (3W) | ASC 3" composite deck / 3W-style | USA, Canada, Australia |
| YX76-305-915 | ComFlor 80 / Ribdeck 80 | UK, Europe, Ireland |
Cross-reference is indicative only — rib geometry and embossment patterns differ between manufacturers. Design must follow local load tables or project-specific structural calculations.
Key Features
Applications
Typical Delivery Timeline
From design approval to site delivery
Engineering Design
Calculation reports, shop drawings, erection manual
1–2 weeksFabrication
CNC cutting, welding, shot blasting, coating
4–6 weeksShipping
Container loading, ocean freight to your port
2–4 weeksSite Erection
Bolt-together assembly with remote guidance
4–8 weeksProduction lead time: 15–30 days depending on project size; shipping and installation time vary by destination and site. Rush production available.
Why Choose Laotie Steel?
A team with 15+ years of export experience, trusted by buyers in 30+ countries
CE (EN 1090), TÜV & ISO 9001
Every product is CE (EN 1090), TÜV and ISO 9001 certified. Mill test certificates (MTC) are provided with every shipment.
5,000 Tons Monthly Capacity
Factory with 5 production lines, about 5,000 t/month. Whether you need a 500 m² workshop or a 50,000 m² industrial complex, we deliver on time.
30+ Countries Served
Export experience across Southeast Asia, Middle East, Africa, Australia, and South America. We design to your local building code: AS/NZS, BS 5950, EN 1993, AISC, or GB 50017.
Full Engineering Package
Structural calculation reports, detailed shop drawings, and erection manuals included with every order. Our engineers use Tekla, SAP2000, and STAAD.Pro for precision design.
Factory-Direct Pricing
No middleman markup. You buy directly from the manufacturer. Typical savings of 30–50% compared to local fabrication, even after shipping and duties.
Team with 15+ Years of Export Experience
Based in Shangqiu, Henan — China's steel manufacturing hub. Projects in 30+ countries. Every bolt, plate, and member is labeled and match-marked for rapid assembly.
Steel Deck Systems We Manufacture
All four deck systems below are roll-formed in our own factory, so a project can mix systems and ship everything in one container.
- Floor Deck / Steel Decking — Composite & Galvanized Floor System
- Closed Rib Floor Deck — Closed-Profile Composite Decking
- Steel Truss Deck — Rebar Truss Composite Decking
- Load-Bearing Deck (No Concrete) — Dry Galvanized Load-Bearing Panels
Frequently Asked Questions
Common questions about floor deck / steel decking
What is steel floor deck used for?
Steel floor deck serves as permanent formwork and bottom reinforcement for composite concrete slabs in multi-story steel buildings.
What profiles do you offer?
Seven standard open profiles: YX51-200-600, YX51-240-720, YX51-305-915, YX65-170-510, YX65-185-555, YX75-200-600 (3W) and YX76-305-915 — plus custom roll-formed sections. Closed-rib and steel truss deck are available as separate systems.
What is the fire rating?
Up to 2 hours with appropriate concrete cover and reinforcement. Full fire engineering data available on request.
What is galvanized composite deck?
Galvanized composite deck (免浇筑承重板) is a pre-fabricated steel panel with integrated stiffeners spanning up to 6m without concrete topping.
Do you provide design support?
Yes. Full composite slab design including reinforcement mesh layout and shear stud specification included.
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Ready to Start Your Project?
Send us your project requirements and drawings. Our engineering team will provide a detailed quotation with structural calculations within 24 hours.