0.5mm Prepainted Galvanized Steel Coil (PPGI) | Color Coated Steel Coil
0.5mm Prepainted Galvanized Steel Coil (PPGI) | Color Coated Steel Coil
High-performance PPGI (Prepainted Galvanized) and PPGL (Prepainted Galvalume) steel coils engineered for roofing, wall cladding, insulated sandwich panels, and industrial manufacturing. Features superior weather resistance, vivid RAL color retention, and versatile coating systems (PE / SMP / HDP / PVDF). Prime quality with EN 10204 3.1 MTC provided. Contact us for current stock, thickness availability, and factory-direct pricing.
- Mill Test Certificate Provided
- Strict Quality Inspection
- Custom Sizes Available
- On-Time Global Delivery
Prepainted Galvanized Steel Coil (PPGI / PPGL) is manufactured by combining high-quality galvanized (GI) or galvalume (GL) steel substrates with premium organic coating resins (PE, SMP, HDP, PVDF). Designed for exceptional corrosion resistance, superior UV weatherability, vivid aesthetic color, and outstanding roll-forming capabilities, our color-coated steel coils are widely utilized across industrial, commercial, residential, and agricultural infrastructure. EN 10204 3.1 Mill Test Certificates (MTC) are provided with every batch.
- Mill Test Certificate (MTC) Provided
- Strict Quality & Paint Coating Inspection
- Custom RAL Colors, Textures & Cut-to-Size Specifications
- On-Time Global Seaworthy Export Delivery
Sky Steel Group supplies full-specification PPGI & PPGL coils for steel structure manufacturing, corrugated roof and wall cladding, insulated sandwich panels, civil residential construction, and home appliances. We provide multiple paint finishes and substrates tailored to diverse environmental exposure conditions.
Coating Performance & Roll Forming
Our prepainted steel coils are engineered for high-speed continuous roll-forming, stamping, and profiling without paint peeling or surface micro-cracking. With strict T-bend test controls (≤ 2T) and excellent impact resistance (≥ 9 J), the paint film maintains robust adhesion during bending into trapezoidal and corrugated profiles.
The choice of topcoat resin ensures reliable long-term performance: PE provides an economical solution for general indoor and outdoor use; HDP and PVDF offer superior UV resistance, color retention, and chemical durability in marine and industrial environments.
PPGI / PPGL Color Coated Steel Coil Specifications
| Item | Available Range & Parameter |
|---|---|
| Product | Prepainted Galvanized Steel Coil (PPGI) / Prepainted Galvalume Coil (PPGL) |
| Substrate Standard | DX51D+Z, DX52D+Z, SGCC, CGCC, S250GD, S350GD, ASTM A755, EN 10169, JIS G3312 |
| Zinc / AZ Mass | Zinc: Z30 – Z275 g/m²; Al-Zn: AZ30 – AZ150 g/m² |
| Thickness | 0.12 – 2.0 mm (Tolerance: ±0.02 mm) |
| Width | 600 – 1250 mm (Custom slit strips from 20 mm) |
| Coating System | Top: 15–25 µm (Primer + Topcoat); Back: 5–10 µm |
| Coating Resin | Polyester (PE), Silicon Modified Polyester (SMP), High Durability Polyester (HDP), PVDF |
| Color / Pattern | RAL Classic Colors, Wood Grain, Marble, Brick, Camouflage, Custom Samples |
| Surface Structure | High Gloss, Normal Gloss, Matte/Wrinkle, Embossed, Anti-Fingerprint, PE Film Laminated |
| Mechanical Properties | T-Bend: ≤ 2T; Impact Resistance: ≥ 9 J; Pencil Hardness: ≥ 2H |
| Processing Service | Slitting, Shearing, Roll Forming (Corrugated / Glazed Tile), Protective Film Coating |
| Certificate & Test | EN 10204 3.1 MTC, ISO 9001, CE, SGS/BV Third-Party Inspection Available |
| Packaging | Standard Export Seaworthy Packing (Waterproof Paper + Metal Guard + Steel Straps) |
Where Is Color Coated Steel (PPGI) Used?
Owing to its exceptional formability, anti-corrosion protection, and diverse color appearance, prepainted steel coil is widely utilized in architectural construction, municipal enclosures, modern warehousing, and global steel logistics.
Frequently Asked Questions About 0.5mm Prepainted Galvanized Steel Coil (PPGI) | Color Coated Steel Coil
1. What is the main difference between PPGI and PPGL?
PPGI (Prepainted Galvanized Iron) uses hot-dip galvanized steel (pure zinc layer, GI) as the substrate, providing sacrificial cathodic protection against rust. PPGL (Prepainted Galvalume) uses 55% Aluminum-Zinc alloy coated steel (GL) as the substrate, which delivers 2 to 4 times higher atmospheric corrosion resistance, superior thermal reflectivity, and longer service life in harsh coastal or tropical climates.
2. What paint coating resins are available and how should I choose for my project?
We supply Regular Polyester (PE, 7–10 years life for general roofing), Silicon Modified Polyester (SMP, 10–12 years for high-temperature areas), High Durability Polyester (HDP, 12–15 years for strong UV regions), and Polyvinylidene Fluoride (PVDF, 20+ years for premium coastal or chemical environments).
3. Can Sky Steel Group customize specific RAL colors, patterns, or surface textures?
Yes, we support all standard RAL Classic color codes, custom sample color-matching, and printed decorative finishes such as wood grain, brick, marble, and textured wrinkle/matte surfaces.
4. What quality tests and inspections are conducted before delivery?
Every production batch undergoes dry film thickness testing, T-bend and impact tests (to verify paint flexibility), pencil hardness tests, MEK solvent rub tests, and salt spray corrosion tests to ensure defect-free quality.
5. What is the expected service life and anti-fading warranty for PPGI coils?
Standard PE coils with Z40–Z60 zinc provide 8–10 years of outdoor durability. High-grade HDP and PVDF coils with Z120–Z275 (or AZ100–AZ150) offer 15 to 25+ years without noticeable fading, chalking, or substrate rust perforation.
6. How are PPGI coils packed to prevent moisture damage and rust during ocean transit?
All coils feature seaworthy export packaging: internal waterproof plastic and craft paper lining, heavy-duty galvanized steel outer shields, internal/external metal corner protectors, and 3 radial plus 3 circumferential high-tensile steel straps on solid pallets
