Color coated roofing sheets are high-performance steel panels manufactured through a continuous hot-dip galvanizing and precision coating process, delivering exceptional weather resistance and aesthetic appeal for modern architectural applications.
Color coated roofing sheets are high-performance steel panels manufactured through a continuous hot-dip galvanizing and precision coating process, delivering exceptional weather resistance and aesthetic appeal for modern architectural applications.
| Layer | Material | Function |
|---|---|---|
| Base Metal | DX51D/DX52D Steel | Structural integrity |
| Corrosion Protection | Zinc/Aluminum alloy (AZ150-200) | Galvanic protection |
| Primer | Chromate-free epoxy | Adhesion promotion |
| Topcoat | PVDF (70%)/SMP/HDP | Color retention & gloss |
1. Thermal Efficiency
• Solar reflectance index (SRI) up to 85%
• Cool roof technology reduces heat absorption by 30%
2. Mechanical Strength
• Tensile strength: 280-550MPa
• Rockwell hardness: HRB 50-75
| Parameter | Standard Value |
|---|---|
| Thickness | 0.3-1.2mm |
| Width | 600-1,250mm |
| Coating Adhesion | Grade 0 (ASTM D3359) |
| Bending Radius | ≤1.5T (90° cold bending) |
| Warranty Period | 10-20 years |