Authentic Steel provides superior PPGL steel coil utilizing a 55% Aluminum-Zinc alloy coated substrate (Galvalume). Combining the sacrificial protection of zinc with the barrier protection of aluminum, our prepainted galvalume coils exhibit extraordinary thermal reflectivity, extreme corrosion immunity, and an extended outdoor service life perfect for premium architectural cladding.
Engineered specifically to survive the world’s most demanding weather conditions, the ppgl steel coil manufactured by Authentic Steel represents the peak of structural anti-corrosion engineering. Since our inception in 1994, our export operations based in the port hub of Tianjin have focused on providing global distributors with materials that merge technical performance with beautiful aesthetic finishes. By choosing our prepainted galvalume steel coils, you are investing in a product that delivers up to four times the atmospheric corrosion resistance of conventional galvanized substrates.
The secret behind the absolute durability of our ppgl steel coil lies directly within the microscopic structure of its 55% Aluminum, 43.4% Zinc, and 1.6% Silicon alloy coating. This structural matrix forms a permanent physical barrier. The aluminum component resists chemical breakdown and oxidation, while the zinc elements provide continuous galvanic protection along exposed cut edges and drill holes. With an alloy coating weight spanning from 20g/m² to 180g/m², our engineers modify the substrate characteristics to fit your exact regional climate profile, protecting your corporate reputation against premature rust failure.
| Parameter Item | Technical Specifications & Range |
| Product Name | PPGL Steel Coil (Prepainted Galvalume Steel) |
| Substrate Material | 55% Al-Zn Alloy Coated Galvalume Steel (GL) |
| Thickness Range | 0.085mm - 1.4mm |
| Width Range | 900mm - 1250mm (or customized customized) |
| Aluzinc Coating Weight | 20g/m² - 180g/m² |
| Top Painting Thickness | 5um - 35um |
| Back Painting Thickness | 5um - 20um |
| Available Paint Systems | PE, SMP, HDP, PVDF |
| Color Options | Full RAL Catalog / Custom Physical Samples |
| Inside Coil Diameter | 508mm / 610mm |
| Total Coil Weight | 3 MT - 24 MT |
| Specialized Aesthetics | Prepainted color design coil, Matte textured plate, Anti-fingerprint GL |



To complement this advanced metal alloy, Authentic Steel works with world-class industrial chemical brands to apply premium paint coatings. Our production facility applies precise layers of paint: a top film of 5um to 35um and a protective back layer of 5um to 20um. For high-end architectural facades and roofing projects exposed to tropical heat or extreme sub-zero weather, we highly recommend our PVDF (fluorocarbon) paint finishes. This paint formula possesses an unbreakable chemical bond that fully deflects ultraviolet rays, maintaining pristine color vibrancy and gloss retention for decades without chalking or cracking.
Furthermore, our state-of-the-art facility manufactures specialized prepainted color matte coils and decorative design plates, expanding creative options beyond standard solid finishes. Every batch of ppgl steel coil undergoes exhaustive, rigorous testing in our factory labs. We measure coating thickness consistency via digital magnetic gauges, evaluate paint cross-linking through methyl ethyl ketone (MEK) rubs, and confirm absolute flexibility via strict impact and bend tests. This ensures our steel behaves perfectly during high-speed cold rolling and mechanical profiling. Contact our Tianjin export center today to secure a reliable supply of premium materials.
Company Name: Authentic Steel (Winroad Group Export Department)
Email: bella@authsteel.com /bella@wanlusteel.com
Mobile/Tel/Whatsapp: +86 189 2041 0870