Authentic Steel supplies premium PPGI steel coil with hot-dip galvanized steel substrate. Specially engineered for roll forming and corrugated roofing sheets, our prepainted galvanized steel coils offer superior paint adhesion, flexible coating choices (PE, SMP, HDP, PVDF), and rigorous quality inspection to withstand diverse climate conditions worldwide.
Authentic Steel has dedicated over three decades since 1994 to manufacturing top-tier steel products for global infrastructure. Our signature ppgi steel coil stands as a testament to our commitment to durability, aesthetics, and industrial excellence. We run state-of-the-art coating lines to deliver prepainted galvanized steel coils that systematically outperform standard industry criteria.
The structural integrity of our ppgi steel coil begins with a premium hot-dip galvanized steel substrate. By enforcing a strict zinc coating range from 30g/m² up to 600g/m², we provide our international clients with unparalleled sacrificial cathodic protection against rust and atmospheric oxidation. Whether your business serves coastal regions with heavy salt fog or arid industrial zones with high UV exposure, our specialized paint formulations provide the ultimate defense. We utilize leading paint chemistries including Regular Polyester (PE) for cost-efficient indoor partitioning, High Durability Polyester (HDP) for extended outdoor weathering, and Polyvinylidene Fluoride (PVDF) for projects requiring maximum chalking and fading resistance.
| Parameter Item | Technical Specifications & Range |
| Product Name | PPGI Steel Coil (Prepainted Galvanized Steel) |
| Substrate Material | Hot-Dip Galvanized Steel (GI) |
| Thickness Range | 0.085mm - 1.4mm |
| Width Range | 900mm - 1250mm (or customized as needed) |
| Top Paint Coating | 5um - 35um |
| Back Paint Coating | 5um - 20um |
| Paint Coating Types | PE (Polyester), SMP, HDP, PVDF |
| Color Standard | RAL Color Code or Customer's Sample |
| Coil Inner Diameter | 508mm / 610mm |
| Max Coil Weight | 3 MT - 24 MT |
| Core Surface Types | Prepainted color steel coil, Matte coil, Design/Patterned plate |



Architects and roofing manufacturers choose Authentic Steel because our materials undergo sophisticated multi-stage processing. This includes structural degreasing, chemical rinsing, multi-layer primer application, and high-temperature curing oven treatments. The final top coat measures between 5um and 35um, combined with a protective back coat of 5um to 20um. This meticulous control guarantees that when your factory feeds our ppgi steel coil into heavy-duty roll-forming machinery to make corrugated roofing sheets or sandwich panels, the paint film experiences absolutely zero micro-cracking, peeling, or delamination.
At Authentic Steel, strict quality inspection is integrated into every shift. Our advanced in-house laboratories execute comprehensive cross-hatch adhesion tests, T-bend tests, impact resistance assessments, and MEK solvent rub verifications before any coil leaves our Tianjin facility. We pack each coil utilizing professional sea-worthy export packaging, featuring heavy-gauge steel protective rings, waterproof paper barriers, and robust metal strapping to guarantee pristine arrival in your warehouse. We proudly export our materials to over 78 countries and regions, offering customized widths from 900mm to 1250mm to match your machinery layout seamlessly. Partner with Authentic Steel to scale your manufacturing business with reliability you can feel.ppgi steel coil
Name: Bella
Email: bella@authsteel.com / bella@wanlusteel.com
Mobile/Tel/Whatsapp: +86 189 2041 0870