Product Overview
Featuring a Polyvinylidene Fluoride (PVDF) topcoat (typically 70% Kynar® resin), this premium prepainted steel offers the highest level of exterior durability among all coil coatings. The PVDF molecular structure provides exceptional resistance to UV radiation, chemical pollutants, and extreme temperature fluctuations. With a service life of 20–25 years, this product is specified for airports, stadiums, high-rise curtain walls, and other iconic structures where color retention and minimal maintenance are critical.
Key Specifications
| Parameter | Range / Options |
|---|---|
| Substrate | Hot-dip galvanized (GI, Z40–Z275) or Galvalume (GL, AZ50–AZ150) |
| Thickness | 0.3 – 1.2 mm |
| Width | 1000 / 1219 / 1250 mm (other widths upon request) |
| Topcoat System | Primer + PVDF topcoat (≥20 μm total) |
| Backcoat | 5–10 μm epoxy or modified polyester |
| Color Range | Solid colors, metallics, and custom RAL (note: PVDF offers a more limited color palette than PE due to resin limitations) |
| Gloss Level | 10–70% (customizable) |
Core Advantages
Ultraviolet Stability – No significant chalking or fading after 20+ years of vertical or low-slope exposure.
Chemical Resistance – Withstands acid rain, industrial fallout, and cleaning agents.
Film Integrity – Passes 1,000+ hours salt spray test; no blistering or underfilm corrosion.
Formability – Maintains excellent adhesion even after 0T–1T bending.
Applications
High-end commercial building curtain walls and roofing.
Airport terminals and sports stadiums.
Chemical plant exteriors and offshore facilities.
Premium household appliances requiring long-term color stability.
