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
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.
Protective kraft paper and steel strapping are selected according to the profile and shipment requirements to help reduce moisture exposure and edge damage during transit.
Sheet lengths are selected according to the project layout, profile, handling, bundle design, and confirmed shipping limits.
Buyer Concern & FAQ
Q1: What is the difference between corrugated and trapezoidal Galvanized Roofing Sheets?
Corrugated Galvanized Roofing Sheets use rounded wave profiles and are widely used for residential, agricultural, and general roofing applications. Trapezoidal and IBR profiles use angular or deeper ribs and are commonly selected for industrial and commercial roofing. Actual structural performance depends on sheet thickness, steel grade, profile geometry, support spacing, and installation design.
Q2: How do I choose the feeding width and effective cover width for Galvanized Roofing Sheets?
Feeding width and effective cover width depend on the selected roofing profile, rib dimensions, wave geometry, side overlap, and roll-forming mold. Different molds can produce different finished cover widths from the same raw sheet width. Feeding width, effective width, and profile dimensions should be confirmed before production.
Q3: What sheet lengths can be supplied for container transportation?
Galvanized Roofing Sheets can be cut to customized lengths according to project and transportation requirements. Suitable shipping length depends on container type, loading method, bundle dimensions, destination requirements, and handling conditions. Length and loading arrangement should therefore be confirmed before production.
Q4: Can Galvanized Roofing Sheets be supplied in thin gauges and different zinc coating weights?
Yes. Galvanized Roofing Sheets are available in multiple thickness and zinc coating options according to the required application. Selected GI specifications can be produced in thin gauges down to approximately 0.115 mm, subject to steel grade, width, coating weight, profile, and production conditions. Zinc coating and thickness should be confirmed according to the required product specification.
Q5: What standards and quality checks are available for Galvanized Roofing Sheets?
Galvanized Roofing Sheets can be supplied according to applicable standards such as ASTM A653, EN 10346, or JIS G3302, depending on the required grade and order specification. During production, thickness, zinc coating, surface condition, profile dimensions, effective width, and other agreed specifications can be checked according to the order requirements.
