Carbon Steel Floor Decking Sheet — Factory Direct Supplier | Huaxia-Steel
Product Overview
Carbon steel floor decking sheet (composite metal deck) is a deeply profiled steel sheet laid over beams and embedded in concrete to form a permanent, stiffening floor system. It speeds construction, reduces propping and cuts overall floor weight. Huaxia-Steel manufactures floor decking in standard and custom profiles, factory direct, with export packing and mill certificates, supporting both small mezzanines and large multi-story projects.
Specification Table
| Item | Range / Value |
|---|---|
| Base steel | Galvanized (Zinc or Zn-Al) |
| Coating | Z180 – Z275 g/m2 typical |
| Thickness | 0.8 – 1.5 mm |
| Effective width | 600 – 1000 mm |
| Profile depth | 50 – 75 mm |
| Yield strength | >=235 – 345 MPa (base) |
| Length | Custom cut to project |
Available Options
- Open trough (re-entrant) deck
- Closed (dovetail) deck
- Galvanized only or pre-primed
- Perforated for improved concrete bond
- Custom rib spacing and depth
Manufacturing Standards
Base steel conforms to EN 10346 or ASTM A653; structural performance follows local composite-deck design codes. Mill certificates for coating mass and mechanical properties are supplied, and we provide span-load data sheets to support your structural engineer. Where the project requires it, we can also supply fire and acoustic performance data for the chosen profile.
Installation and Bond
The deck is laid across steel beams and either shot-fired or welded to them, then reinforced and poured with concrete. Embossed or perforated patterns in the trough improve mechanical bond with the concrete so the slab and steel act compositely. We can supply matching shear studs and edge trims, and our drawings show sheet orientation and end-bearing details to keep the install straightforward on site.
Applications
- Multi-story commercial floors
- Mezzanines and platforms
- Bridge and conveyor walkways
- Industrial plant upper decks
- Residential and mixed-use slabs
- Retrofit and extension floors
Quality Assurance
Each deck lot is checked for profile depth, width, coating mass and embossing (where used for bond). Coating certificates and mechanical test reports accompany the shipment, and third-party inspection (SGS, BV, TUV) can be arranged for project-critical supply. Dimensional checks ensure the sheets nest and overlap correctly on site without field rework.
Packaging and Shipping
Floor decking is bundled, edge-protected and seaworthy packed, with length and profile marked on each bundle. We ship FOB, CIF or CFR worldwide and can coordinate mixed-container loads with other steel products, including just-in-time sequencing to match your construction program.
Dimensional and Load Reference
| Parameter | Typical range / value |
|---|---|
| Base steel | Galvanized Z180 – Z275 |
| Thickness | 0.8 – 1.5 mm |
| Effective width | 600 – 1000 mm |
| Profile depth | 50 – 75 mm |
| Typical span | 2.0 – 3.0 m unpropped (by design) |
Span and reinforcement depend on the slab depth, concrete strength and imposed load, so the structural engineer’s drawing governs. We supply the profile’s load-span data and can pre-notch or pre-punch the sheets to your layout so they drop into place on site. Confirm the slab design before fixing the deck thickness to avoid both under-strength and over-specification.
Common Order Mistakes to Avoid
- Ordering by ‘metal deck’ without profile depth or width
- Forgetting the embossing or perforations needed for bond
- Mixing up effective versus overall width
- Leaving the concrete slab detail off the enquiry
A clear line such as ‘Composite floor deck, galvanized Z275, 1.0 mm x 915 mm eff., 75 mm depth, 200 sheets, CIF Manila’ prevents all four. Share the structural drawing and we will confirm the profile and any perforations required for composite action.
Why Buy Floor Decking from Huaxia-Steel
We manufacture standard and custom composite deck profiles with the coating mass and embossing your specification requires, and we provide load-span data to support the design. Our export packing protects the sheets and our sequencing service aligns deliveries with your build program. From a single mezzanine to a multi-story tower, we are a single source for deck, shear studs and edge trim, consolidated in one container to save freight.
Open Trough vs Dovetail Deck
Open trough (re-entrant) deck has a U-shaped rib that is easy to shoot-fire and form, and it suits most commercial floors. Dovetail (closed) deck has a trapezoidal rib that mechanically locks the concrete and can allow shallower slabs or higher shear transfer, often used where the deck remains exposed or where acoustic or fire performance matters. The choice depends on slab depth, concrete strength and the structural engineer’s preference; we can supply both and provide the profile drawings so the design team selects the right one for the job.
Coating Mass and Corrosion Protection
Floor decking is typically supplied galvanized to Z180 to Z275 grams per square metre, with Z275 preferred for long service life or aggressive environments. Because the deck is encased in concrete, the coating mainly protects during construction and any exposed edges; higher mass simply extends that protection margin. If the deck stays partially exposed, specify a heavier coating or a pre-primed finish. We confirm the coating mass on the certificate and can arrange salt-spray or thickness verification on request for project-critical supply.
| Coating | Mass (g/m2) | Typical use |
|---|---|---|
| Z180 | 180 | Dry interior, fast build |
| Z225 | 225 | Standard commercial |
| Z275 | 275 | Humid or longer life |
| Z275 + primer | 275 + coat | Exposed or aggressive |
Composite Action, Studs and Reinforcement
The deck forms the permanent formwork, but composite behavior comes from the bond between steel and concrete plus the shear studs welded through the deck to the beams. Embossed or perforated ribs improve that mechanical bond so the slab and steel act as one. We supply matching shear studs and can pre-punch or pre-notch the sheets to your layout so they drop into place on site. The reinforcement schedule is designed by your engineer; the deck simply makes placing and pouring it faster and safer.
Fire, Acoustic and Build-Speed Benefits
Composite decks contribute to fire resistance through the concrete mass and can be detailed with fire-rated slab depths per the design. They also improve acoustic separation between floors when specified with the right slab build-up. Beyond performance, the biggest day-to-day benefit is speed: the deck is laid and welded quickly, needs no striking, and lets following trades start early, which compresses the overall program on multi-story work. For tight schedules, that time saving is often the deciding factor.
A Practical Ordering Example
A clear enquiry reads: Composite floor deck, galvanized Z275, 1.0 mm x 915 mm effective width, 75 mm depth, open trough, 200 sheets, CIF Manila. From that line we confirm profile, coating, embossing and packing, and return a firm quote with lead time and load-span data. Share the structural drawing and we will confirm the profile, any perforations required for composite action, and the shear-stud schedule so the whole floor package arrives coordinated.
Installation Sequence on Site
Begin by verifying the steel beams are level and spaced to the deck layout, then place the sheets with the wide rib bearing fully on the beams and the narrow rib free, lapping side joints as the profile requires. Attach the deck by shot-fired pins or welded studs at the specified spacing, keeping end bearing adequate and edges supported. Once the deck is secure, place reinforcement and any embedded items, then pour the concrete. A correct sequence keeps the deck from bouncing during the pour and ensures the slab thickness the engineer designed.
Slab Design Inputs We Need From You
To confirm the right deck and thickness, share the slab depth, the concrete strength, the imposed live load, and the required fire rating. From these we supply the profile’s load-span table and tell you the maximum unpropped span and the reinforcement needed. If the design changes, send the revised drawing rather than a verbal note so the deck we cut matches the structure. Clear inputs up front prevent the expensive fix of a deck that cannot carry the slab your engineer assumed.
Estimating Quantities for a Floor
Measure the floor area, divide by the effective width of the chosen deck, and add allowance for end laps, edge trim and typical cutting waste of about 5 percent. Remember that effective width is less than overall width because of the side lap, so plan from the cover width. The table below gives a quick planning reference for common decks.
| Deck (mm) | Effective width (mm) | Sheets per 100 m2 (approx) |
|---|---|---|
| 0.8 x 688 | 660 | 152 |
| 1.0 x 915 | 880 | 114 |
| 1.2 x 915 | 870 | 115 |
| 1.5 x 600 | 580 | 172 |
Why a Coordinated Floor Package Saves Money
Ordering deck, shear studs and edge trim separately from different suppliers invites mismatched profiles, late studs and site delays that cost more than any small material saving. A single coordinated package arrives with the stud schedule matched to the deck, the edge trim cut to length, and the deliveries sequenced to your build. For multi-story work this coordination is the difference between a floor poured on schedule and a floor waiting on a missing component, so treat the deck as a system, not a sheet.
Request a Quote for Carbon Steel
Huaxia-Steel supplies a full range of carbon steel products with mill test certificates, third-party inspection and flexible export terms (FOB, CIF, CFR, DDP). Tell us your grade, size and quantity, and our team will return a competitive quote with lead time within 24 hours. Email [email protected] or use the contact form to start your order.
