High-Quality PPGI & PPGL Steel Coils — Your Trusted Global Steel Partner
Authentic Steel supplies high-performance Prepainted Galvanized Steel Coils (PPGI) and Prepainted Galvalume Steel Coils (PPGL) manufactured on continuous high-speed coil coating lines (CCL). By applying specialized organic chemical pretreatments, anti-corrosive primers, and high-performance topcoats onto hot-dip galvanized (GI) or 55% Al-Zn Galvalume (GL) steel substrates, these color-coated coils combine rich architectural aesthetics with superior multi-layer corrosion protection.
Manufactured strictly in accordance with international standard codes—including ASTM A755, EN 10169, JIS G3312 / JIS G3322, and GB/T 12754—our PPGI and PPGL coils deliver outstanding resistance to ultraviolet (UV) radiation, atmospheric chalking, and environmental degradation across commercial, industrial, and residential building applications globally.
Multi-Layer Defense System: Combines metallic zinc or aluzinc sacrificial protection with high-durability organic paint coatings to halt moisture penetration, cut-edge red rust, and atmospheric oxidation.
Exceptional Coating Adhesion & Formability: Formulated with high-flexibility resins to ensure zero paint cracking, flaking, micro-crazing, or film delamination during high-speed roll forming, cold bending, deep stamping, and slitting.
Precise Color & Film Thickness Control: Advanced online coating technology guarantees tight film thickness tolerances (Top: 5–35 µm; Back: 5–20 µm) and consistent color uniformity (ΔE ≤ 0.5) across large manufacturing heats.
Tailored Weathering Grades: Offered in standard Polyester (PE), Silicone Modified Polyester (SMP), High-Durable Polyester (HDP), and Fluorocarbon (PVDF) paint systems to match diverse climate conditions and service life requirements.
Full Global Compliance & MTC Traceability: Verified through rigorous batch laboratory testing and backed by official EN 10204 3.1 Mill Test Certificates (MTC) for full material traceability.
To satisfy varying outdoor climate challenges and project budget targets, we offer four primary organic resin options:
Polyester (PE): The most versatile and cost-effective coating choice, providing excellent gloss retention, flexibility, and corrosion resistance for interior structural framing and general outdoor building panels (5–10 years service life).
Silicone Modified Polyester (SMP): Formulated with silicone resin modification to deliver increased pencil hardness, superior scratch resistance, and enhanced thermal stability for hot, high-radiation regions (10–12 years service life).
High-Durable Polyester (HDP): Engineered using high-molecular-weight resin matrices to resist color fading, UV degradation, and chalking under severe solar radiation exposure (15+ years service life expectancy).
Polyvinylidene Fluoride (PVDF / Fluorocarbon): The premier coating solution containing 70% fluorocarbon resin. Delivers maximum chemical stability, extreme UV resistance, and salt spray endurance for coastal, marine, and heavy industrial environments (20+ years service life).
Thanks to its mechanical adaptability, chemical stability, and customizable aesthetic finishes, our color-coated steel coils serve as essential stock material across major global sectors:
Building & Construction: Corrugated roofing panels, standing seam roof systems, insulated sandwich wall panels, composite decking, rainwater systems (gutters and downspouts), garage doors, and rolling shutter doors.
Home Appliances & Consumer Electronics: Refrigerator side and back plates, air conditioner outdoor unit housings, microwave oven cabinets, washing machine outer bodies, and steel office furniture.
Infrastructure & Transportation: Highway sound barriers, container wall plates, commercial vehicle body panels, interior partition walls, and cleanroom paneling.
Quality assurance is embedded into every stage of our continuous coil coating process. To ensure uncompromised coating adhesion and long-term durability on every export order, each production heat undergoes rigorous laboratory testing:
MEK Solvent Rub Test: Verifies complete polymer curing and chemical bond strength of top paint coats.
T-Bend & Impact Adhesion Testing: Evaluates 0T to 2T tight-radius bends and direct impact resistance to guarantee zero paint micro-cracking or delamination.
Pencil Hardness & Scratch Resistance: Ensures surface film hardness meets 2H+ standards for safe handling and roll-forming.
Salt Spray & Environmental Chamber Endurance: Verifies corrosion barrier performance under continuous salt mist exposure.
Mill Test Certificate (MTC): Issued per production heat in full compliance with EN 10204 3.1, certifying mechanical, chemical, and coating properties.
We provide custom value-added processing services to support diverse downstream production lines, including longitudinal narrow-strip slitting, cut-to-length sheet flattening, and protective PE surface film lamination.
For long-distance ocean transport, all coils are prepared with heavy-duty export packaging:
Wrapped in volatile corrosion inhibitor (VCI) anti-rust paper and high-density waterproof plastic wrapping.
Fitted with inner and outer galvanized steel protective edge rings, side protective caps, and external steel sleeves.
Secured with high-tensile radial and circumferential steel strapping on seaworthy wooden pallets.
For custom RAL color matching, free samples, MTCs, or current pricing, please contact our sales team.
WhatsApp: +86-137 8227 9845
E-mail: alice@authsteel.com
