Galvanized Roofing Sheet
Galvanized Roofing Sheet
High-Quality Galvanized Roofing Sheets (GI Sheets) for Building Construction
| Substrate | Hot-Dip Galvanized Steel (GI) |
| Roofing Profiles | Corrugated Waves / Trapezoidal Box (IBR) |
| Feeding Width | 750 / 914 / 1000 / 1200 / 1220 / 1250 mm |
| Effective Width | 665 / 800 / 820 / 900 / 915 / 1050 mm |
| Thickness Range | 0.115 – 0.8 mm (Customizable) |
Custom Roofing Profiles
Corrugated Wave Profile
Trapezoidal Box Profile
Glazed Step Tile Profile
IBR Profile
Multiple Profiles
Corrugated wave, trapezoidal box, and IBR profiles for versatile applications.
Flexible Zinc Mass
Customizable Z30 to Z275 g/m² coating options to match target service life.
Ultra-Thin Options
Available in thin gauges down to 0.115 mm with full-hard structural rigidity.
Flexible Custom Specs
Wide range of thicknesses, wave designs, and lengths available.
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Galvanized Roofing Sheet (GI Corrugated & Trapezoidal Sheet) |
| Available Profiles | Traditional Corrugated Waves, Trapezoidal / Box Profile, IBR Roofing Profile |
| Primary Applications | Industrial Warehouses, Agricultural Sheds, Residential Roofs, Wall Cladding & Temporary Fencing |
| Standard Compliance | ASTM A653, EN 10346, JIS G3302 |
| Feeding Width (Raw Coil) | 750mm, 914mm, 1000mm, 1200mm, 1220mm, 1250mm |
| Effective Cover Width | 665mm, 800mm, 820mm, 900mm, 915mm, 1050mm (Customizable) |
| Thickness Range | 0.115 – 0.8 mm |
| Sheet Length | 1800 – 11800 mm (Tailored for 20ft / 40ft Container Loading) |
| Zinc Coating Mass | Z30 – Z275 g/m² |
| Surface Spangle Finish | Regular Spangle, Zero / Minimised Spangle, Big Spangle |
| Mechanical Hardness | Full Hard (G550 / HRB 85–95) or Commercial Grade (G300) |
| Bundle Weight / Packaging | 2 – 5 Metric Tons per seaworthy bundle with steel pallets |
Quality Control & Shipping Case
Batch checks on thickness, effective width, diagonal symmetry, and sheet length.
Moisture-proof kraft paper and heavy steel strapping prevent transit rust and edge damage.
Precision-cut lengths (e.g., 5.8m / 11.8m) engineered for maximum ocean container utilization.
Buyer Concerns (FAQ）
Q1: What is the difference between corrugated wave sheets and trapezoidal (box profile/IBR) roofing sheets?
A: Corrugated sheets feature traditional round wave profiles suitable for standard residential or agricultural roofs, while trapezoidal (box profile / IBR) sheets offer higher water discharge capability and structural strength, making them ideal for industrial facilities and commercial roofs.
Q2: How do I choose the correct feeding width and effective cover width for my roofing project?
A: Feeding width is the initial flat GI coil width (e.g., 1000mm or 1200mm). After cold roll forming, the effective cover width (e.g., 800mm or 900mm) represents the actual installation coverage per sheet after overlapping. We assist you in calculating sheet quantities to minimize material waste.
Q3: What sheet lengths are recommended for sea container transportation?
A: For standard 20ft containers, maximum length is usually kept within 5.8 meters (5800mm); for 40ft containers, lengths up to 11.8 meters (11800mm) are recommended to maximize space utilization and cut ocean freight costs.
Q4: Can galvanized roofing sheets be customized with thin gauges like 0.115mm and specific zinc coating weights?
A: Yes. We specialize in ultra-thin and full-hard roofing sheets starting from 0.115 mm, with zinc coating weights ranging from Z30 up to Z275 g/m² to meet different budget and durability requirements.
