PPGL (Pre-Painted Galvalume Steel) is a pre-painted steel coil made from Al-Zn coated steel (Galvalume / DX51D+AZ) as the base material, coated with organic paints on a continuous coil coating line. Compared to PPGI (which uses a pure zinc base), the 55% Aluminum-Zinc alloy coating in PPGL provides superior long-term corrosion resistance and heat reflectivity. PPGL is the preferred material for harsh outdoor environments, roofing, and architectural cladding.
Specification & Coating Details
Typical coating structures and paint types for PPGL.
| Item | Specification | Description |
|---|---|---|
| Base Metal | DX51D+AZ / SGLCC | Al-Zn alloy coated steel substrate |
| Coating Weight | AZ100 – AZ150 | Alloy coating weight (g/m²) |
| Top Paint | PE / SMP / PVDF / HDP | Polyester, Silicon-Modified, PVDF etc. |
| Paint Thickness | Top: 15–25 μm / Back: 5–10 μm | Typical dry film thickness |
| Color | RAL Standard / Custom | Can be matched to customer samples |
Note: The Al-Zn alloy coating in PPGL offers superior corrosion resistance compared to the pure zinc coating in PPGI, making it more suitable for coastal and highly humid environments.
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Adhesion (T-Bend) |
|---|---|---|---|---|
| PPGL | 140–300 | 270–500 | ≥22 | ≤3T (No peeling) |
Available Sizes & Delivery
| Thickness | 0.3–1.5 mm |
| Width | 600–1250 mm |
| Coil Weight | 3–10 tons per coil |
| Forms Available | Pre-painted coil (PPGL), cut-to-length sheet, corrugated sheet |
| Standard | EN 10169 / ASTM A755 / JIS G3322 |
| Mill Test Certificate | EN 10204 3.1 with every shipment |
| MOQ | 5 Tons |
| Delivery Time | Within 15-20 days (≤1000 tons) |
Why Order from Zhongtang Steel?
- Superior Weather Resistance — Excellent corrosion resistance in harsh environments
- Excellent Heat Reflectivity — Keeps buildings cooler in hot climates
- Rich Color Options — RAL colors and custom patterns available
- EN 10204 3.1 MTC supplied with every shipment
- Mill-direct pricing — no trading company markup
Applications
- Roofing and wall cladding for industrial and commercial buildings
- Architectural panels and facades
- Home appliances — ovens, refrigerators, air conditioners
- Steel doors, garage doors, and roll-up shutters
- Solar panel mounting structures
- Agricultural buildings and greenhouses
Values are typical reference ranges per EN 10169. Actual properties may vary by mill, paint type, and production route. Mill test certificates (EN 10204 3.1) are supplied with every shipment — contact us for exact data sheets.
