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Help CenterSteel Coil & Strip & Color Coated Steel Coil，0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1.0mm、1.2mm
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Steel Coil & Strip & Color Coated Steel Coil，0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1.0mm、1.2mmNegotiableMOQ: 5 Metric Tons -
Steel Coil & Strip & Color Coated Steel Coil，0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1.0mm、1.2mmNegotiableMOQ: 5 Metric Tons
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Steel Coil & Strip & Color Coated Steel Coil，0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1.0mm、1.2mmNegotiableMOQ: 5 Metric Tons
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Steel Coil & Strip & Color Coated Steel Coil，0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1.0mm、1.2mmNegotiableMOQ: 5 Metric Tons
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Steel Coil & Strip & Color Coated Steel Coil，0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1.0mm、1.2mmNegotiableMOQ: 5 Metric Tons
Color Coated Coil Product Detailed Description
Color coated coil (also known as color steel coil, abbreviated as PPGI/PPGL) is a metal composite material made of hot-dip galvanized / aluminum-zinc / zinc-aluminum-magnesium steel sheet as the base substrate. It undergoes degreasing and chemical conversion treatment, then is roller-coated with organic paint on both sides and high-temperature cured. It integrates steel strength, coating corrosion resistance and decoration performance, and can be directly processed and used.
1. Core Structure (Five-layer System)
Base SubstrateMaterial: Hot-dip galvanized (GI), Aluminum-zinc coated (AZ), Zinc-aluminum-magnesium (ZM); a small amount of electro-galvanized or cold-rolled sheet.Common specifications: Thickness 0.3–1.2mm; Width 1000/1200/1250mm; Galvanizing weight Z120/Z180/Z275 (g/㎡, double-sided); Aluminum-zinc coating AZ100/AZ150.
Chemical Conversion CoatingComposition: Chromate / chromium-free passivation film, thickness 1–3μm.Function: Enhance coating adhesion, seal substrate micropores, improve short-term corrosion resistance.
Primer LayerMaterial: Epoxy / polyester primer, thickness 5–10μm.Function: Anti-corrosion, isolate substrate from topcoat, improve interlayer adhesion.
Topcoat LayerMaterial: PE Polyester, SMP Silicon Modified Polyester, HDP High Weather Resistance Polyester, PVDF Polyvinylidene Fluoride, front thickness 20–35μm.Function: Determine color, gloss, weather resistance and stain resistance.
Backing Coat LayerMaterial: Modified polyester / epoxy, thickness 5–15μm.Function: Protect the back side, prevent corrosion and avoid scratch during transportation.
2. Comparison of Main Coating Performance
| Coating Type | Key Component | Weather Resistance Life | Corrosion Resistance | Cost | Application Scenario |
|---|---|---|---|---|---|
| PE Polyester | Saturated Polyester Resin | 5–10 Years | Medium | Low | Ordinary factory building, warehouse, indoor home appliances, low corrosion environment |
| SMP Silicon Modified Polyester | Polyester + Organic Silicon | 10–15 Years | Good | Medium | Urban buildings, commercial factory buildings, general outdoor, anti-pollution demand |
| HDP High Weather Resistance Polyester | Weather Resistant Polyester Resin | 15–20 Years | Excellent | Medium High | High sunlight exposure area, roof and wall panel, photovoltaic support, moderate corrosion environment |
| PVDF Fluorocarbon | Polyvinylidene Fluoride Resin | 20–30 Years | Superior | High | Coastal / chemical industrial area, high-end venue, landmark building, strong ultraviolet / acid-base environment |
3. Product General Specifications (Customizable)
Thickness: 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm
Width: 1000mm, 1200mm, 1250mm (most commonly used)
Color: Standard colors (Ocean Blue, Grey White, Brick Red, Off White, Silver Grey); Custom colors (per RAL / Pantone color card)
Gloss: High Gloss (80–90°), Medium Gloss (40–60°), Matte (10–30°)
Coating Thickness: Front side 20–35μm, Back side 5–15μm
4. Core Features
Light Weight & High Strength: About 1/3 weight of traditional building materials, high strength, reduce building load.
Corrosion & Weather Resistance: Organic coating isolates air and moisture, good salt spray resistance, acid and alkali resistance, UV resistance, service life 10–30 years.
Strong Decoration: Rich colors, uniform gloss, diverse textures (plain coating, mesh pattern, embossed).
Convenient Construction: Support direct shearing, bending, stamping and locking, no secondary painting required, high installation efficiency.
Environmental Protection & Energy Saving: Low pollution production and recyclable; high reflectivity (≥0.75), energy saving and consumption reduction.
5. Application Fields
Construction Industry (Over 70%): Roof and wall panel of industrial factory & warehouse, steel structure enclosure, gymnasium / airport / high-speed railway station roof panel, photovoltaic power station support & roof, municipal enclosure, rolling shutter door.
Home Appliance Industry: Refrigerator side panel, washing machine shell, air conditioner shell, microwave oven panel, small household appliance shell.
Transportation & Equipment: Container side panel, carriage plate, cabinet & chassis, cable tray, light steel structural parts.
Others: Advertising display board, furniture panel, interior decorative wall panel, new energy energy storage equipment shell.
6. Quality Standards & Certification
National Standard: GB/T 12755 Color Coated Steel Sheet and Strip
International Standard: ASTM A755, EN 10169, JIS G3312
Core Testing Items: Coating adhesion (Cross-cut test Grade 0), Hardness (≥2H), Salt spray resistance (≥500h), Aging resistance (≥1000h), Color difference (ΔE≤2.0)
7. Selection Suggestion
Ordinary Inland Outdoor Non-polluted Area: Choose SMP (10–15 years) with optimal cost performance.
High Sunlight & Rainy Area: Choose HDP (15–20 years) with significantly improved weather resistance.
Coastal / Chemical Industrial Area / Strong Corrosion Environment: Choose PVDF (over 20 years) with excellent fluorocarbon coating on salt spray and acid-base resistance.
Indoor / Home Appliance / Low Corrosion Environment: Choose PE (5–10 years) with low cost and good workability.
8. Storage & Transportation
Storage: Store indoors with dry and ventilated environment, temperature 5–30℃, humidity ≤60%; place flat, avoid direct sunlight, rain and heavy pressure; pad with wooden blocks at the bottom, height from ground ≥10cm.
Transportation: Use special coil support for firm fixing; cover with rainproof cloth to avoid sun and rain; handle with care to prevent collision and coating scratch.
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