SGCH Z120 Pre Painted Steel Coil with 0.70mm Thickness for Roofing Sheets and Structural Building Applications
SGCH Z120 Pre Painted Steel Coil with 0.70mm Thickness for Roofing Sheets and Structural Building Applications
１．Product Overview
SGCH Z120 Pre Painted Steel Coil is designed for roofing sheets, structural building panels, container panels, and industrial fabrication applications. The combination of SGCH substrate, Z120 zinc coating, and polyester paint system provides corrosion protection and decorative appearance for indoor and outdoor environments.
The product features 0.70mm thickness and 1000mm width, making it suitable for roofing profile production, wall cladding systems, and structural panel fabrication.
２．Technical Solution
The SGCH steel substrate is protected by a 120g/m² zinc coating that provides sacrificial corrosion resistance. A polyester paint system is then applied to improve weather resistance and surface appearance.
The coating structure consists of 15μm polyester top coating with 5μm primer and a reverse side coating of 7μm plus 5μm primer. This coating system helps maintain surface integrity during forming, transportation, storage, and installation.
RAL color options support architectural and industrial appearance requirements.
３．Specifications
| Parameter | Value |
|---|---|
| Product Name | Pre-painted Steel Coil |
| Grade | SGCH |
| Standard | AISI / ASTM / BS / DIN / GB / JIS |
| Thickness | 0.70mm |
| Width | 1000mm |
| Zinc Coating | 120g/m² |
| Top Surface | 15 Micron Polyester + 5 Micron Primer |
| Back Surface | 7 Micron + 5 Micron Primer |
| Color | RAL 5019 |
| Coil ID | 508mm / 610mm |
| Application | Roofing, Structure, Flange Plate, Ship Plate, Container Plate |
| Tolerance | ±3‰ |
| Top Coating Thickness | 17–25μm |
| Back Coating Thickness | 5–8μm |
| Available Zinc Coating Range | 40–275g/m² |
| Available Width Range | 900–1500mm |
４．Application
- Roofing sheets
- Steel structure workshops
- Warehouse roofing systems
- Building wall cladding
- Container panels
- Shipbuilding components
- Flange plates
- Industrial structural panels
- Commercial building projects
- Household appliance panels
５．Processing
- Roll forming
- Roof tile production
- Wall panel fabrication
- Slitting
- Cut-to-length processing
- Bending
- Profiling
- Structural component manufacturing
６．Advantages
- Z120 zinc coating provides corrosion protection for roofing and structural applications.
- 0.70mm thickness offers strength and forming capability for roof tile production.
- 1000mm width is suitable for common roofing and wall panel processing lines.
- Polyester coating system supports weather resistance and color retention.
- SGCH substrate provides good forming performance for profile manufacturing.
- 508mm and 610mm coil IDs are compatible with standard decoiling equipment.
- RAL color options support architectural appearance requirements.
７．How to Choose
- Choose Z120 coating for projects requiring moderate corrosion protection.
- Select thickness according to roofing profile span and load requirements.
- Confirm coating type based on outdoor exposure conditions.
- Verify width compatibility with forming equipment before ordering.
- Choose RAL color according to project appearance specifications.
８．FAQ
Q1．What is the zinc coating of this product?
The specified zinc coating is 120g/m².
Q2．What is the thickness and width?
The thickness is 0.70mm and the width is 1000mm.
Q3．What coating structure is used?
The top surface uses 15μm polyester plus 5μm primer, while the back surface uses 7μm coating plus 5μm primer.
Q4．What substrate grade is used?
The substrate grade is SGCH.
Q5．What applications is this product suitable for?
It is suitable for roofing sheets, structural panels, ship plates, container panels, wall cladding, and steel structure projects.
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