Prepainted Galvalume Steel Coil With Aesthetic Versatility For Construction

PPGL steel coil introduction:

Prepainted Galvalume Steel Coils – Durability Meets Aesthetic Excellence

Prepainted Galvalume steel coils combine the superior corrosion resistance of Galvalume (55% aluminum, 43.4% zinc, and 1.6% silicon alloy coating) with the vibrant aesthetics of high-performance paint systems. This advanced material features a steel substrate coated with a protective aluminum-zinc alloy layer, followed by a durable prepainted finish applied through a precision coil coating process.

Specification of PPGL steel coil:

Characteristics of PPGL steel coil:

1. Aesthetic Versatility & Design Freedom

Prepainted steel offers exceptional decorative flexibility with an extensive selection of colors (including custom RAL and Pantone shades), patterns (wood grain, stone, metallic), and surface finishes (glossy, matte, textured, or embossed). This allows architects and designers to achieve both modern and traditional aesthetics, making it ideal for high-visibility applications such as:

• • Architectural cladding (facades, roofing, sunscreens)

  • Interior design elements (elevator panels, partitions, decorative ceilings)

  • Consumer goods (appliance exteriors, furniture, lighting fixtures)
    The coatings are UV-stable, ensuring long-term color vibrancy without fading, even in direct sunlight.

2. Formability Without Compromise

Engineered for superior workability, the pre-coated surface retains flawless adhesion during fabrication processes like:

• • Bending (tight radii without micro-cracking)

  • Stamping/Pressing (complex shapes with sharp edges)

  • Roll-forming (consistent finish in profiled sections)
    This flexibility reduces production waste and enables intricate designs while maintaining coating integrity—critical for automotive parts, HVAC ducts, and metal furniture.

3. Unmatched Corrosion Protection

The synergy of a corrosion-resistant substrate (hot-dip galvanized or Galvalume® steel) and a robust paint system (polyester, PVDF, or silicone-modified coatings) creates a multi-barrier defense against:

• • Salt spray (coastal/marine environments)

  • Chemical exposure (industrial zones, agricultural facilities)

  • Humidity & temperature cycles
    Independent testing confirms 20-30 years of service life in C5-M (ISO 12944) environments, outperforming conventional painted metals.

4. Permanent Coating Adhesion

Through a rigorously controlled coil coating process—involving chemical pretreatment, primer application, and high-temperature curing—the paint forms a molecular bond with the metal. This results in:

• • Cross-cut adhesion (Grade 0 per ISO 2409)

  • Resistance to mechanical stress (impact, abrasion, scrubbing)

  • Weathering stability (no blistering/delamination after 1,000+ hours of salt spray or QUV testing)
    Such durability ensures compliance with stringent standards like ASTM A755 for building envelopes and FM Global approvals for industrial use.

Here comes loading pictures for PPGL steel sheets as below:

FAQ:

Q:Are you a trading company or a manufacturer?

SHANGHAI HUIYI INTERNATIONAL CO., LTD is a trading company dealing with all kinds of steel products and construction materials. 

We build long-term relationships with many factories in China since our team has dealt with trading business for many years. Our main products are Galvanized Steel, Galvalume Steel, Pre-painted Galvanized Steel, pre-painted galvalume steel, corrugated steel, cold roll steel, hot roll steel, angle bar, c channel, aluminum bubble foil, fiber cement....

Our products are mainly exported to Africa, Southeast Asia, the Middle East, Europe, which are used in projects and the construction field.

We have been continuing to supply superior products, services and solutions to customers based on our competitive advantages in brand, technology, innovation and ability.

SHANGHAI HUIYI INTERNATIONAL CO., LTD has got huge support and help from our customers and suppliers. We have been growing up at a rapid and steadily pace. We will do our best to give our customers a better price, better quality and better service.