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Help CenterSteel Coil & Strip & Color Coated Coil，EN 10169、AAMA 2605、ASTM D7869
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Color Coated Coil Detailed Product Description
Color Coated Coil, full name Color Coated Steel Coil, is made of cold-rolled steel sheet, hot-dip galvanized or hot-dip aluminum-zinc steel sheet as the base substrate. It undergoes degreasing, cleaning and chemical conversion treatment, then is continuously roller-coated with organic paint and baked and cured to form a metal composite material. It features light weight, high strength, excellent corrosion resistance, elegant appearance and easy processing, widely used in steel structure, decoration and home appliance industries.
1. Core Structure (Five-layer Composite)
From inside to outside: Base Substrate → Metal Coating → Chemical Conversion Layer → Primer → Topcoat (Backcoat included)
Base Substrate
Cold-Rolled Steel (CR): High strength and smooth surface; suitable for indoor and low-corrosion environments with cost advantages.
Hot-Dip Galvanized Steel (GI): Zinc coating 80–275g/m² on double sides; isolated air for anti-corrosion with high cost performance, applicable to ordinary industrial and civil buildings in inland areas.
Hot-Dip Aluminum-Zinc Steel (GL, 55%Al+43.4%Zn+1.6%Si): Corrosion resistance is 2–3 times that of galvanized steel; superior salt spray resistance, ideal for coastal and chemical high-corrosion areas; conventional aluminum-zinc coating 100–150g/m².
Zinc-Aluminum-Magnesium Steel (ZAM): Contains magnesium element with self-repairing performance; excellent incision anti-corrosion property for harsh corrosive conditions.
Chemical Conversion LayerActs as an adhesive bridge between substrate and coating; improves coating adhesion and corrosion resistance, thickness about 1–3μm.
Paint Coating System
Primer: Epoxy or polyurethane primer, thickness 5–7μm, enhances adhesion and anti-corrosion performance.
Topcoat: Core functional layer determining weather resistance, corrosion resistance and appearance.
| Coating Type | Main Composition | Service Life | Features | Application Scenarios |
|---|---|---|---|---|
| Polyester (PE) | Ordinary Polyester Resin | 5–10 Years | Low cost, rich colors, good workability | Ordinary factory buildings, warehouses, indoor decoration |
| Silicon Modified Polyester (SMP) | Polyester + Silicone Resin | 10–15 Years | High hardness, anti-fouling, better weather resistance than PE | Urban factory buildings, commercial buildings, roof and wall panels |
| High Durability Polyester (HDP) | Modified Polyester Resin | 15–20 Years | Strong UV and chalking resistance | High altitude and strong sunlight areas construction |
| Polyvinylidene Fluoride (PVDF) | 70%PVDF + 30%Acrylic | Over 20 Years | Acid & alkali resistance, salt spray resistance, extreme climate adaptability | Coastal landmark buildings, high-end venues, chemical industrial zones |
Backcoat: Polyester or epoxy paint, thickness 5–15μm, for backside anti-corrosion and scratch prevention.
2. Standard Specifications (Customizable)
Thickness: 0.13–4.0mm (Common: 0.3–1.5mm, tolerance ±0.02–0.05mm)
Width: 750–1250mm (Standard size: 1000/1200/1250mm)
Coil Inner Diameter: φ508mm (20 inch) / φ610mm (24 inch)
Coil Weight: 3–10 tons (Slitting available as required)
Color: Customized per RAL color card; regular colors: Ocean Blue, Light Grey, Brick Red, Off-white, Ivory White; printed, matte and textured surface available.
Coating Thickness: Topcoat 20–35μm, Backcoat 5–15μm; PVDF ≥25μm, SMP 25–30μm, PE 20–25μm.
3. Production Process
Uncoiling → Degreasing → Water Washing → Chemical Passivation → Drying → Primer Coating → Baking → Topcoat Coating → Baking → Cooling → Film Laminating → Recoiling → Packaging
4. Product Features
Superior Corrosion Resistance: Double protection of organic coating and metal coating; service life over 50% longer than ordinary galvanized steel, stable use for 10–20 years in coastal and industrial areas.
Excellent Weather Resistance: PVDF coating resists UV radiation and aging, no fading or chalking for more than 20 years; SMP & HDP suitable for long-term outdoor application.
Good Mechanical Properties: Yield strength 250–550MPa (G550 high-strength substrate optional), tensile strength 330–490MPa; available for bending, stamping and roll forming without coating cracking.
Decorative Effect: Rich colors, adjustable gloss (high/medium/matte); smooth surface, replace traditional spray painting, eco-friendly and odorless.
Energy Saving & Environmental Protection: Pre-painted process avoids on-site pollution, 100% recyclable; high heat reflection rate ≥0.75%, reduces building energy consumption.
Easy Installation: Light weight and high strength, large single panel area, simple splicing, high construction efficiency and shorter project period.
5. Main Applications
Construction Industry: Industrial factories, warehouses, steel structure roof & wall panels, purification workshops, airports, stations, stadiums, villa exterior walls, construction fences.
Home Appliance Industry: Refrigerator shell, washing machine panel, air conditioner outdoor unit shell, microwave oven and small household appliance backboard.
Decoration Industry: Indoor ceiling, partition wall, elevator decorative panel, furniture panel, advertising board and publicity column.
Transportation Industry: Car carriage panel, container side panel, ship interior panel, rail transit equipment shell.
Other Fields: Ventilation duct, grain silo, greenhouse, photovoltaic support, metal furniture.
6. Quality Standards & Certification
National Standard: GB/T 12754, GB/T 2518
International Standard: EN 10169, AAMA 2605, ASTM D7869
Environmental Certification: Ten-ring Certification, ROHS, REACH, compliant with green building standards.
7. Selection Guide
Inland Ordinary Environment: PE coating + Hot-dip Galvanized Substrate (Z120), cost-effective, service life 5–8 years.
Urban & General Industrial Area: SMP coating + Galvanized/Aluminum-zinc Substrate, service life 10–15 years, anti-fouling and weather resistant.
Coastal & Chemical High-corrosion Area: PVDF coating + Aluminum-zinc Substrate (AZ150), service life over 20 years, excellent salt spray and acid-alkali resistance.
High Strength Requirement: G550 high-strength substrate, thickness ≥0.6mm, suitable for long-span roof and heavy-load wall projects.
8. Packaging & Storage
Packaging: Waterproof plastic film + cardboard + steel band strapping, prevent surface scratch and moisture rust during transportation.
Storage: Store indoors in dry and ventilated place, keep away from ground; flat placement, stacking layers ≤3 to avoid deformation.
9. After-sales Service
Customized specifications, colors and special surface treatments are available.
Provide Mill Test Certificate, coating inspection report and quality guarantee certificate.
Delivery Time: 5–7 working days. Shipment from Tianjin Port, support export to all over the world.
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