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Pre-Painted Steel Coil - Aesthetic & Durable Coated Steel
1. Product Overview
Color Coated Coil, also known as Pre-Painted Steel Coil, is a composite material made from cold-rolled, galvanized, or aluzinc steel substrate. Through a continuous production line involving surface cleaning, chemical treatment, primer coating, and finish coating, it is coated with multiple layers of high-performance organic paints and baked to cure. It perfectly combines the strength of the metal substrate with the aesthetics and durability of the organic coating, offering a wide range of colors, gloss levels, and textures for applications in construction, appliances, and industrial sectors.
2. Key Features
(1)Excellent Decorativeness & Diversity
It offers an extensive range of colors, gloss levels (high-gloss, matte), and surface textures (solid, stone, wood grain). This provides architects and designers with limitless creative possibilities to meet diverse aesthetic needs for various architectural styles and products.
(2) Outstanding Durability & Weatherability
Using high-quality paints like Polyester (PE), Siliconized Polyester (SMP), and Polyvinylidene Fluoride (PVDF), these coils offer excellent UV resistance, corrosion resistance, and chalk resistance. PVDF is ideal for harsh environments, maintaining color and integrity for years.
(3)Excellent Formability & Processability
The substrate offers good mechanical properties, and the coating has high flexibility, allowing it to withstand bending, stamping, and deep drawing without cracking or peeling. This facilitates the production of complex components for diverse designs.
(4)Economical, Eco-friendly & Efficient Production
Pre-painting is more eco-friendly than post-painting, reducing VOC emissions through centralized production. For end-users, it eliminates the painting process, saving investment and time, enabling faster fabrication and installation.
Parameter Category | Parameter Description |
Substrate Type | Cold Rolled (CR), Galvanized (GI), Aluzinc (GL/AZ) |
Substrate Thickness | 0.12mm - 1.5mm |
Substrate Coating Mass | Galvanized (GI): 60-275 g/m²; Aluzinc (GL): 60-180 g/m² |
Coating System | Topcoat + Primer (2/1), or Topcoat + Primer + Backer (2/1/1) |
Coating Type | Polyester (PE), Siliconized Polyester (SMP), Polyvinylidene Fluoride (PVDF), High Durability Polyester (HDP) |
Coating Thickness | Top side typically 20-35 μm, back side 5-20 μm (Adjustable per request) |
Standard Color | Available from standard color charts, or custom-matched to client codes |
Surface Gloss | Low Gloss (<30%), Matte (30-50%), Medium Gloss (50-70%), High Gloss (>70%) |
Coil Width | 600mm - 1350mm (Can be custom slit) |
Coil Weight | Typically 3-10 Metric Tons/Coil (Depends on equipment & transport) |
Mechanical Properties | Yield Strength: 220-550 MPa, Tensile Strength: 270-600 MPa (Depends on substrate) |
Durability Reference | PE: 7-10 years, SMP: 10-15 years, PVDF: 20+ years (Actual life varies with environment) |
4. Application Scenarios
(1)Building Envelope Systems
Widely used for roofing and wall cladding in industrial plants, commercial complexes, and stadiums. It combines durability and aesthetics, forming complete building envelope systems like sandwich panels for insulation and visual appeal.
(2)Household Appliances & Electronic Housings
Used for appliance housings (refrigerators, AC units, washing machines) and electronic enclosures (computer cases, control cabinets). Offers aesthetics, scratch resistance, and can meet specific safety standards.
(3)Interior Decoration & Furniture
Suitable for interior partitions, ceilings, office dividers, and furniture panels. Diverse colors and textures offer design flexibility, combining aesthetics, durability, and easy cleaning.
5. FAQs
Q1: What are the differences between PE, SMP, and PVDF coatings, and how should one choose among them?
A1: They differ in durability and cost. PE is economical; SMP offers better weatherability; PVDF provides superior corrosion/UV resistance for harsh environments and premium buildings, at a higher cost.
Q2: What is the warranty period for the colored coated rolls?
A2: The warranty period depends on the coating and environment. Typically 5-7 years for PE, 10-12 for SMP, and 15-20+ for PVDF. Refer to supplier's specific warranty terms.
Q3: What should be noted when transporting and storing color-coated rolls?
A3: Protect from rain and moisture. Avoid contact with corrosive substances. Use dunnage between coils, don't stack too high. Use proper lifting tools to avoid edge and surface damage.
