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A Color Coated Aluminum Coil, often referred to as pre-painted aluminum sheet, is a versatile and durable building material. It consists of an aluminum coil substrate that has been surface treated and coated with multiple layers of paint (primer and topcoat) through a continuous roll-coating process. This industrial process creates a uniform, protective, and decorative finish that is highly resistant to corrosion, weathering, and UV rays. The result is a lightweight, strong, and aesthetically pleasing product used in countless architectural and industrial applications worldwide.
China is a global hub for the production of high-quality pre-finished aluminum coils. While official rankings can vary based on production volume, export capacity, and market reputation, the following list represents some of the most prominent and reliable manufacturers in the industry, known for their extensive product portfolios and international reach.
Zhengfei Group
Zhongwang Group
China Zhongwang
Nanshan Aluminum
Alcha Aluminum
Yongtai Group
Henan Mingtai Aluminum
Jiangsu ALKING Aluminum
Guangdong Hoshion Aluminum
Note: This list is compiled based on industry reputation and market presence.
The production of color coated aluminum coil is a precise, multi-stage process ensuring superior adhesion and longevity of the finish.
The raw aluminum coil is uncoiled and cleaned to remove any oils or impurities. It then undergoes a chemical conversion coating (e.g., chromating or non-chromating) to create a surface that enhances paint adhesion and corrosion resistance.
A primer layer is applied to the pre-treated surface. This layer is crucial for providing extra corrosion protection and forming a strong bond between the aluminum and the subsequent topcoat.
The decorative and protective topcoat is applied. This is where the color and finish (e.g., glossy, matte, textured) are defined. The coil passes through a precision coating head and then into a curing oven.
The coated coil enters a high-temperature oven. This curing process bakes the paint onto the aluminum surface, ensuring it becomes hard, durable, and fully bonded.
Finally, the coil is cooled down and recoiled into a master roll. It is then inspected, packaged, and prepared for shipment.
Architectural aluminum coil can be classified in several ways based on coating type, color system, alloy, and more.
PE (Polyester): The most common and cost-effective option, offering good durability and a wide range of colors. Suitable for interior applications and general exterior use.
PVDF (Polyvinylidene Fluoride): Premium coating with exceptional resistance to UV radiation and harsh weather conditions, ensuring color retention for over 20 years.
FEVE (Fluoroethylene Vinyl Ether): A high-performance coating similar to PVDF, known for enhanced color gloss retention and environmental resistance.
HDPE (High-Density Polyethylene): Sometimes used as a laminate film for specific protective and decorative purposes.
NANO: Incorporates nanotechnology to create a surface with self-cleaning, anti-fingerprint, or anti-bacterial properties.
Solid Colors: Standard single-color finishes (e.g., white, black, bronze).
Metallic Colors: Finishes containing metallic flakes for a shimmering effect.
Wood Grain: Patterns that mimic the look of natural wood.
Stone Grain: Finishes that replicate the texture and appearance of granite or marble.
Brushed Finish: A surface that resembles brushed metal.
3D Patterns: Textured finishes that create a three-dimensional visual effect.
1000 Series (e.g., 1050, 1100): High purity aluminum, excellent formability and corrosion resistance.
3000 Series (e.g., 3003, 3004): Manganese as the main alloy, good strength and workability. Common for roofing and siding.
5000 Series (e.g., 5005, 5052): Magnesium as the primary alloy, offering high strength, good weldability, and excellent marine atmosphere corrosion resistance.
Architectural: Roofing, wall cladding, composite panels, ceiling systems.
Industrial: Appliance casings, electrical enclosures, transportation parts.
Interior Decoration: Furniture, partitions, decorative panels.
Fire-Rated: Specially treated coils with improved fire resistance.
Antibacterial: Coated with additives that inhibit bacterial growth.
Heat-Reflective: Designed to reflect solar radiation, improving energy efficiency.
The application of painted aluminum coil is vast due to its durability and aesthetic flexibility.
Building & Construction: Roofing and wall cladding systems, rainware products, curtain walls, and industrial insulation panels (sandwich panels).
Transportation: Interior and exterior panels for trailers, caravans, and ship building.
Consumer Durables: Household appliances like refrigerators, air conditioners, and microwave ovens.
Interior Design: Ceilings, partitions, furniture, and kitchen cabinets.
While both are coil coated metal products, they have distinct differences.
| Feature | Color Coated Aluminum Coil | Color Coated Steel Coil (Galvalume/Galvanized) |
| Base Material | Aluminum | Steel |
| Weight | Lightweight (about 1/3 the density of steel) | Heavy |
| Corrosion Resistance | Excellent; forms a protective oxide layer | Good, but can rust if the coating is damaged |
| Strength | Lower strength-to-weight ratio | Higher inherent strength |
| Formability | Excellent, easier to bend and shape | Good, but can be prone to springback |
| Cost | Generally higher material cost | Generally more cost-effective |
| Typical Use | Architectural facades, roofing where weight is a concern | marine environmentsIndustrial buildings, structural panels, appliances |
The Harmonized System (HS) Code is crucial for international trade, determining import duties and regulations. For pre-painted aluminum coil, the primary HS code is typically 7606.92. However, this can vary slightly depending on the specific country and product characteristics (e.g., thickness, width, and alloy).
7606.92.90: This often serves as a general code for "Aluminum plates, sheets and strip, of a thickness > 0.2mm, rectangular, painted, varnished or plastic-coated."
7607.11.90: This code may be used for "Aluminum foil, backed, painted, varnished or plastic-coated."
Important Note: It is essential to verify the exact HS code with your freight forwarder, customs broker, or the importing country's customs authority to ensure correct classification and avoid shipping delays or penalties.
Selecting the right supplier for your coated aluminum strip is a critical decision that impacts project quality, cost, and timeline. Here are key factors to consider:
A reputable supplier should have robust quality control systems and hold relevant international certifications, such as ISO 9001 for quality management. Their products should comply with standards like ASTM AAMA 621 for building products or specific European EN standards.
Look for a supplier with modern production lines and technical expertise. Can they produce the specific coating (PVDF, PE), finish (wood grain, stone), and alloy you require? Experience in your target industry (e.g., architecture vs. appliances) is a significant advantage.
A diverse portfolio indicates flexibility. Ensure they offer the colors, coatings, and specifications you need. Suppliers like Jinhu, who offer a wide range, can be a one-stop solution for various projects.
Responsive communication, clear documentation, and professional service are non-negotiable. The supplier should provide detailed quotations, technical data sheets, and responsive support before and after the sale.
Inquire about their packaging standards to prevent damage during transit, lead times, and experience with exporting to your country. Reliable logistics are key to a smooth supply chain.
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What is Aluminum Coil？OUR ADVANTAGES
Smoothness
There is no residual stress on the surface and no deformation after shearing
Weather resistance
The paint pattern made by roller coating and high temperature baking has high gloss, good color stability and little color difference change
Decorative
There is a fresh natural beauty, the pattern is casual and do, give customers a wide range of personality choices, can enrich the culture of the product, give people more beautiful enjoyment.
Environmental Protection
Resistant to salt, alkali and acid rain corrosion, will not corrode or produce toxic bacteria, does not release any toxic gases.
Mechanical
ACP after composite with plastic and adhesive. With the flexural and flexural strength required by the decorative plate, in the four seasons climate, the change of wind pressure, temperature, humidity and other factors will not cause bending, deformation,expansion and so on.
