What is PPGL Sheet?
PPGL (Prepainted Galvalume Steel Sheet) is a high-performance material that combines the superior corrosion resistance of galvalume coating with the aesthetic appeal of premium color coating.
Unlike traditional PPGI (galvanized base), PPGL uses Galvalume base steel (55% aluminum, 43.5% zinc, 1.5% silicon), offering:
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3-5 times better corrosion resistance than galvanized steel
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Superior heat reflectivity for energy-saving roofing
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Excellent cut-edge protection with aluminum barrier effect
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Longer service life up to 20-25 years in harsh environments
This makes PPGL the preferred choice for roofing, wall cladding, and applications in coastal or high-humidity regions.
Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Base Material | Galvalume Steel (55% Al, 43.5% Zn, 1.5% Si) | ASTM A792 / JIS G3321 |
| Coating Weight | AZ50 – AZ150 (50-150g/m²) | Double side, AZ100+ recommended for coastal areas |
| Thickness | 0.14mm – 1.2mm | Tolerance: ±0.02mm |
| Width | 600mm – 1250mm | Slitting service available |
| Coil Weight | 3 – 8 MT | Standard export packing |
| Top Coat Type | PE / SMP / HDP / PVDF | PVDF for maximum durability |
| Back Coat | Modified Polyester / Epoxy | 5-10μm, anti-corrosion protection |
| Color Options | RAL Classic / RAL Effect / Pantone | Custom colors accepted |
| Coating Structure | 2/1 or 2/2 | Two top coats for enhanced durability |
| Surface Finish | Glossy / Matt / Embossed / Anti-Fingerprint | Customizable |
| Certifications | ISO 9001, SGS, CE, TÜV | Third-party inspection available |
Recommended Applications
| Application | Why PPGL | Recommended Coating |
|---|---|---|
| Roofing Sheets | Heat reflection, corrosion resistance | HDP / PVDF, AZ100+ |
| Wall Cladding | Aesthetic appeal, weather durability | PVDF, RAL colors |
| Sandwich Panels | Adhesion strength, lightweight | PE / SMP, AZ70+ |
| Garage Doors | Impact resistance, anti-scratch | Embossed finish |
| Agricultural Buildings | Ammonia resistance, long lifespan | HDP, AZ100+ |
| Coastal Structures | Salt spray resistance | PVDF, AZ150+ |
| Industrial Sheds | Chemical resistance, durability | PVDF / HDP, AZ120+ |
Visual Suggestion: Use icon-based layout with high-quality application images (factory roof, seaside villa, warehouse wall panel, agricultural shed).
Our Customization Capabilities
Color Matching
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Any RAL Classic / RAL Effect / Pantone color
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Custom color matching based on customer samples
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Gloss level adjustable (10-90%)
Surface Treatment
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Anti-fingerprint coating for handling protection
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Embossed patterns for decorative applications
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Wood grain finish for architectural aesthetics
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Protective film (transparent / white) available
Processing Services
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Slitting to custom widths (min 100mm)
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Cut-to-length sheet production
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Precision leveling for high flatness requirements
Packaging
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Seaworthy export packaging
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Fumigation-free wooden pallets
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Moisture-proof kraft paper + steel strapping
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Protective edge protectors
Quality Assurance
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100% online coating thickness and color difference inspection
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Salt spray test (≥500 hours for PVDF grade)
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MEK resistance test (≥100 times)
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T-bend and impact test per batch
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Third-party inspection (SGS, BV, Intertek) available
