Authentic Steel offers long-lasting prepainted steel coil options engineered for high-end industrial cladding, insulated sandwich panels, and modern architecture. Featuring advanced multi-layer coating systems (PE, SMP, HDP, PVDF) on premium GI, GL, or ZAM steel substrates, our prepainted coils combine vivid color retention, reliable UV protection, and excellent structural formability.
For architectural structures, industrial manufacturing complexes, and large commercial developments, selecting high-performance building cladding is vital to project longevity and thermal efficiency. Authentic Steel, the international trade arm of Winroad Group operating from the vital port city of Tianjin since 1994, provides premium prepainted steel coil solutions engineered specifically to bridge the gap between creative architectural design and structural durability. Our materials protect structures across 78 countries against fading, chalking, and premature corrosion.
The base foundation of our premium prepainted steel coil features high-quality metallic core substrates. Depending on your project requirements, we apply protective organic paint layers onto hot-dip galvanized steel, 55% galvalume steel, or advanced zinc-aluminum-magnesium (ZAM) steel alloys. With thicknesses ranging from 0.085mm to 1.4mm and widths custom-tailored between 900mm and 1250mm, our advanced product configurations match perfectly with automatic sandwich panel lines and high-speed cold corrugation machinery, ensuring excellent structural yields.
| Parameter Item | Technical Specifications & Range |
| Product Name | Prepainted Steel Coil (PPGI / PPGL / Poly-Coated ZAM) |
| Core Substrates | Hot-Dip Galvanized, Galvalume, Zinc-Aluminum-Magnesium (ZAM) |
| Thickness Spectrum | 0.085mm - 1.4mm |
| Width Spectrum | 900mm - 1250mm (Custom slits available) |
| Top Paint Coating | 5um - 35um (Multi-coat systems) |
| Reverse Paint Coating | 5um - 20um (Moisture resistant backer paint) |
| Paint Chemistries | Regular Polyester (PE), HDP, PVDF Fluorocarbon |
| Visual Textures | Solid RAL Glossy, Textured Matte, Pattern Printed Plate |
| Protective Film | Optional PE protection film (Thickness: 30um - 50um) |
| Core ID Size | 508mm / 610mm |
| Permissible Coil Mass | 3 MT - 24 MT |
To defend against intense solar heat and harsh environmental weathering, Authentic Steel implements high-tier chemical paint formulations. For standard projects, our Regular Polyester (PE) coatings provide reliable performance. For intense outdoor applications, we highly recommend our High Durability Polyester (HDP) or Polyvinylidene Fluoride (PVDF) coating systems. These advanced paint formulations feature strong chemical bonds that deflect harsh UV rays, keeping the surface free from chalking and maintaining vibrant color consistency for decades. Our top paint layer measures from 5um to 35um, backed by a reverse coat of 5um to 20um, blocking moisture infiltration between structural panel joints.
Quality verification is standard practice for every production batch at Authentic Steel. Our specialized testing laboratories monitor coating parameters to ensure absolute technical perfection. We perform regular cross-hatch adhesion grids, T-bend radius evaluations, and gloss spectrophotometer matching against the standard RAL catalog. This rigorous quality testing ensures that our prepainted steel coil can bend, shape, and punch smoothly without microscopic paint tearing or fracturing. Contact our Tianjin export center today to optimize your material supply chain with reliable, industrial-grade steel solutions.
Company Name: Authentic Steel (Winroad Group Export Department)
Email: bella@authsteel.com / bella@wanlusteel.com
Mobile/Tel/Whatsapp: +86 189 2041 0870
