PPGL coated coil (Pre-painted Galvalume Steel Coil, abbreviated as PPGL coil) is a composite metal material integrating a 55% aluminum – 43.5% zinc – 1.5% silicon aluminized zinc substrate with a functional pre-applied coating. Leveraging the dual advantages of “aluminized zinc substrate + decorative coating,” it significantly outperforms traditional galvanized color-coated coils (PPGI) in harsh environments such as coastal areas, high temperatures, and high humidity. It is widely used in architectural curtain walls, outdoor roofing, high-end home appliances, and agricultural greenhouses.
PPGL Coated Coil – Specifications
PPGL Coated Coil consists of an aluminum-zinc-coated substrate with a high-performance coating. Wanzhi Group’s PPGL steel can be customized to meet your application requirements, with specifications comprehensively covering industrial and architectural needs.
| Item | Description |
| Base Material | Adopt AZ30 – AZ150 Aluzinc steel |
| Thickness | 0.12 – 1.5mm; Customizable ultra-thin (0.12mm) and thick plate (2.0mm) specifications are available |
| Width | 600 – 1250mm |
| Coating System | Equipped with four core coatings: PE, HDP, PVDF, and SMP |
| Coating Thickness | 15 – 40μm (Primer: 5 – 20μm + Topcoat: 10 – 40μm) |
| Product Forms | Cover a full range of products including PPGL steel coils, flat plates, slitting strips, corrugated plates, trapezoidal roof panels, and sandwich panels |
| Color Card Standards | RAL and (Pantone) standard color cards; Precise color difference control with ΔE ≤ 1.0 |
| Coil Inner Diameter | 508mm or 610mm |
| Coil Weight | Up to 10 metric tons |
PPGL Coated Coil – Coating
| Coating Type | Core Component | Performance | Application |
| Polyester (PE) | Saturated polyester resin | Indoor lifespan of 10 – 15 years, outdoor lifespan of 8 – 12 years, ΔE ≤ 2.0 | Indoor decoration, outdoor components not exposed to rain |
| High Weather-resistant Polyester (HDP) | Modified polyester resin | Outdoor lifespan of 15 – 20 years, QUV test for UV resistance ≥ 2000 hours | Ordinary industrial plants, agricultural greenhouses |
| Fluorocarbon (PVDF) | Polyvinylidene fluoride resin | Outdoor lifespan of over 25 years, salt spray test ≥ 1200 hours | Coastal building curtain walls, high-end venue roofs |
| Silicone-Modified Polyester (SMP) | Silicone – polyester copolymer | Excellent resistance to humidity and heat, adhesion ≥ 5B, suitable for high-temperature environments | Drying equipment casings, buildings in tropical regions |
| Polyurethane (PU) | Polyurethane resin | Outdoor lifespan of 15 – 20 years or even longer, salt spray test of 500 – 1000 hours | Commonly used in specific industrial applications |
| Plastic Sol (PVC) | Plasticized polyvinyl chloride (PVC) paste resin | Outdoor lifespan of 10 – 15 years, salt spray test of over 1000 hours | Applications requiring high abrasion resistance |
PPGL Coated Coil – Appearance
The decorative appeal of PPGL coated coil is one reason for its widespread popularity. We offer various surface treatments to create unique visual effects.
Color Series – PPGL
PPGL’s color performance relies on the stability of its coating and galvalume substrate to achieve long-term color retention:
- Classic Solid Colors: RAL9016 (Pure White), RAL5005 (Sky Blue), RAL6005 (Grass Green), and other hues;
- Gloss Levels: High Gloss (≥70°), Matte (≤30°), Satin (30%-50%);
Textured Series – PPGL
Mechanical embossing synergizes with the coating to create textured effects that blend aesthetic appeal with practicality.
- Orange Peel Texture: Most versatile texture concealing processing scratches, with scratch resistance ≥2H hardness.
- Wood/Stone Texture: 95% realistic replication preserving wood/stone visual effects.
- Hammered/Leather Texture: Strong surface relief enhancing slip resistance and abrasion resistance.
Print Series – PPGL
Digital roller coating technology enables customized patterns on PPGL surfaces while maintaining weather resistance.
- Custom Patterns: Supports personalized printing like corporate logos and brand motifs.
- Scenario Adaptation: Regional cultural motifs, artistic textures for commercial spaces, natural landscapes, etc.
PPGL Coated Coil – Additional Services
Wanzhi Group not only supplies PPGL coil sheets, but also offers customized processing services tailored to the material properties of PPGL, maximizing the retention of substrate and coating performance.
Slitting: Precise cutting to widths of 100-1250mm with a tolerance of ±0.1mm.
Shearing: Processing coils into flat sheets of 1000-6000mm length with surface flatness ≤2mm/m.
Bending forming: Cold-forming into C-channels, U-channels, etc.
Roll forming: Processing coils into various panel profiles such as corrugated sheets, roofing panels, and wall panels.
Composite processing: Laminating with polyurethane or rock wool to create PPGL sandwich panels.
Film coating: Applying protective film to PPGL coil surfaces.
Punching: Creating custom patterned perforations.
PPGL Coated Coil – Factory in China
As a professional manufacturer of aluminum-zinc coated color-coated coils, Wanzhi Group Factory’s coated steel is widely popular in over 100 countries and regions worldwide due to its highly competitive pricing, high customization, stable supply, and quality assurance.
Factory & Capacity
Our production base in Boxing, Binzhou, Shandong, features 1 high-end aluminized zinc production line and 3 color-coated lines. Our PPGL steel complies with international standards including ASTM, JIS, EN, and GB, and the factory holds ISO and CE certifications.
- Stock: Standard specifications (AZ30-150 + PE coating) maintained in inventory, ready for shipment within 5 business days;
- Custom Orders: Custom specifications (AZ30-150+ PVDF/HDP/SMP coating, special colors) require 15-30 working days production lead time;
- Quality Control: Our laboratory is equipped with salt spray testers, QUV weathering testers, and other devices. Quality inspection reports are issued for every batch.
Quality Certification & Packaging
Our factory and products are certified under ISO9001, SGS, and BV standards, and we support third-party testing; If you plan to visit our PPGL production line, please leave a message to contact us.
Our steel coils and sheets feature export-grade packaging: inner rust-proof film, outer waterproof kraft paper, secured with galvanized iron sheets and steel strapping. Wooden pallets can be added, with customizable vertical/horizontal loading configurations suitable for sea and land transport.
Clients & Applications
PPGL coated coil has been exported to over 100 countries and regions, serving applications including building roofs, walls, industrial facilities, greenhouses, ventilation ducts, drainage channels, commercial hospitals, and appliance panels. Our products consistently receive recognition for quality and volume both domestically and internationally.
PPGL Coated Coil VS PPGI Coated Coil
| Feature | PPGL Coated Coil | PPGI Coated Coil |
| Substrate Coating | 55% aluminum, 43.4% zinc | 100% zinc |
| Heat Resistance | Can withstand temperatures up to 315°C | Can withstand temperatures up to 160°C |
| Corrosion Resistance | Super strong | Good |
| Galvanic Protection | Good | Excellent |
| Cost | Slightly higher | More economical |
| Appearance | Similar to PPGI | Similar to PPGL |
| Best Applications | Projects in high-temperature environments, coastal areas, and industrial zones | Ordinary buildings, indoor applications, etc. |
PPGL Coated Coil plays a vital role in applications demanding high heat resistance and long-term corrosion protection, such as curtain wall roofing in coastal buildings, agricultural facilities in tropical regions, and exterior panels for high-end home appliances. It combines decorative appeal with protective functionality, making it an outstanding building and industrial material. Contact Wanzhi Group immediately to obtain a customized PPGL solution tailored to your project requirements!