Color coated aluminum coils, also known as pre‑painted aluminum coil or coated aluminum roll, are high‑performance aluminum base materials processed by advanced roller coating and baking curing technology. Our color coated aluminum coils adopt premium aluminum substrates including 1060, 3003, 3004, 3105, 5052 alloy, supplied with PE polyester coating or PVDF fluorocarbon coating for outdoor and indoor projects. Every batch of color coated aluminum coils delivers uniform surface color, strong paint adhesion, outstanding corrosion resistance and superior weather resistance, which makes our color coated aluminum coils ideal for deep processing such as bending, stamping, cutting and forming.
These color coated aluminum coils support custom colors, glossy / matte / metallic finishes and custom thickness & width. As lightweight decorative metal material, color coated aluminum coils are widely applied for building roofing, wall cladding, curtain wall panels, ceiling, aluminum composite panel, outdoor signage, gutter, appliance shell and transportation components. Good UV‑resistance enables color coated aluminum coils to keep stable gloss and less color fading even in coastal, high‑humidity and harsh outdoor environments. Our color coated aluminum coils are fully recyclable with low‑maintenance cost, you can get factory‑direct color coated aluminum coils and matching color coated aluminum sheet with stable lead‑time and competitive price.
Common color coated alloy materials
1050 color coated aluminum coil sheet strip
1050 aluminum is a commercially pure aluminum alloy (with 99.5% minimum aluminum content). When color coated, it becomes a high-quality, decorative and protective product widely used in many industries.
1060 color coated aluminum coil sheet strip
1060 aluminum is a high-purity aluminum alloy from the 1000 series, containing at least 99.6% aluminum. When color coated, it combines the excellent ductility, corrosion resistance, and conductivity of 1060 aluminum with a decorative and protective color coating
1070 color coated aluminum coil sheet strip
1070 aluminum is a commercially pure aluminum alloy with ≥99.7% aluminum content, making it one of the purest aluminum grades available. When color coated, it becomes a versatile, lightweight, decorative material ideal for applications requiring high conductivity, excellent corrosion resistance, and a premium surface finish
1100 color coated aluminum coil sheet strip
1100 aluminum is a commercially pure aluminum alloy (Al ≥ 99.0%) known for its excellent corrosion resistance, formability, and weldability. When color coated, it becomes an ideal material for applications that require decorative finishes, long-term durability, and high malleability.
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3003 color coated aluminum coil sheet strip
3003 aluminum alloy is a widely used Al-Mn (aluminum-manganese) alloy that offers better strength and corrosion resistance than pure aluminum (1000 series). When color coated, 3003 becomes ideal for decorative and structural applications requiring durability, aesthetic finish, and excellent weather resistance.
3004 color coated aluminum coil sheet strip
3004 aluminum is an Al-Mn alloy with magnesium (Mg) added (~1%), providing better strength and excellent formability over 3003. When color coated, it becomes a robust, decorative material ideal for roofing, cladding, siding, and architectural panels, especially in outdoor applications.
3105 color coated aluminum coil sheet strip
3105 color-coated aluminum coil sheet strip is a widely used material in construction, roofing, and industrial applications due to its excellent corrosion resistance, formability, and aesthetic appeal.
5005 color coated aluminum coil sheet strip
5005 Color Coated Aluminum Coil Sheet Strip is a popular product in the aluminum industry, widely used for architectural, decorative, and industrial applications due to its excellent corrosion resistance, moderate strength, and smooth surface
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5052 color coated aluminum coil sheet strip
5052 color coated aluminum coil sheet strip is a versatile material known for its higher strength, excellent corrosion resistance, and good formability, making it ideal for demanding applications in marine, transportation, and architectural industries. Below is a detailed breakdown
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UV Printing Aluminum Sheet | High Resolution Custom Printed Metal Panel
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Aluminum Channel Letter Coil: Premium Material for Stunning, Durable Signage Solutions
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High glossy white sublimation aluminum sheet
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Pear White Sublimation Aluminum Sheets
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Gold Mirrored – Sublimation Aluminium Sheet
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Sublimation Aluminum Brushed board
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Sublimation aluminum sheet
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Aluminum Roll Jacketing
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Camouflage prepainted aluminum coils
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Color coated aluminum strips
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Brick Prepainted aluminum coils
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Gray Prepainted aluminum coils
Production Process of Color Coated Aluminum Coil
TMR Aluminum adopts advanced continuous roller coating production line with imported Ransburg electrostatic spraying system and Henkel pretreatment technology. All color-coated aluminum coils strictly follow standardized 8-step production procedures, ensuring ultra-stable color consistency, strong coating adhesion and excellent forming performance for channel letter signage.
Step 1: Substrate Inspection & Uncoiling
We select qualified 1060/3003/5052 aluminum coil substrates. Before production, our QC team checks flatness, thickness tolerance, surface cleanliness and mechanical properties to eliminate defective base materials.
Step 2: Chemical Pretreatment
Multi-stage degreasing, acid washing, alkaline washing and chromate conversion treatment completely remove surface oil, oxide and dust. A uniform chemical conversion film is formed to greatly improve paint adhesion and anti-corrosion ability, preventing peeling and cracking during bending and drilling.
Step 3: Primer Roller Coating
High-performance epoxy or polyester primer is evenly coated on both sides. The primer layer enhances bonding force between aluminum substrate and topcoat, and provides basic anti-rust protection. We use imported PPG / AkzoNobel / Beckers primer paint.
Step 4: High-Temperature Curing
The coated coil enters a 9-zone independent temperature-control oven with constant temperature ranging from 200℃ to 260℃. Precise temperature control ensures full resin cross-linking, forming a dense and tough primer film.
Step 5: Topcoat Finishing Coating
According to customer requirements, PE polyester, SMP silicon-modified polyester or PVDF fluorocarbon topcoat is applied. The topcoat determines the final color, gloss, weather resistance and UV resistance. All colored finishes support matte, brushed, metallic and customized Pantone colors.
Step 6: Secondary High-Temperature Curing & Cooling
After topcoat application, the coil goes through secondary high-temperature baking and then uniform rapid cooling. This process stabilizes the paint film structure, effectively avoiding color fading and coating peeling in later processing.
Step 7: Protective Film Lamination
Optional PE protective film is pasted on the surface to prevent scratches during slitting, bending, grooving and drilling. Different viscosity films are matched for signage processing needs.
Step 8: Final Quality Inspection & Rewinding
Final full inspection includes coating thickness test (±1.5μm accuracy), color difference ΔE test, surface defect check, adhesion test and salt spray test. Qualified coils are rewound, labeled and packed for export shipment.
Frequently Asked Questions
Q1: What alloy grades are available for color‑coated aluminum coil?
Our main alloys include 1050,1060,3003,3105,5005,5052. 3003 is most popular for outdoor signage, building decoration due to excellent weather resistance. 5052 offers higher strength for wind‑load demanding projects.
Q2: What paint brands do you use for color‑coated aluminum?
We adopt internationally well‑known paint brands: PPG, AkzoNobel, Beckers for PVDF fluorocarbon coating and high‑grade polyester powder coating. For conventional economical orders, qualified domestic premium paint is also optional upon customer request. Different paint brands bring different outdoor service life and cost levels.
Q3: What is the difference between roller‑coating and spray‑painting?
Roller coating: Uniform thin coating layer, stable color batch‑to‑batch, high production efficiency, best for coil mass production.
Spray painting: Thicker paint film, suitable for special colors & custom post‑cut blanks, higher unit cost.
Q4: How many years can color coated aluminum last outdoors?
Regular polyester powder‑coated: 5‑8 years outdoors. Imported PPG / AkzoNobel PVDF fluorocarbon coated aluminum can reach 15‑20 years anti‑fading service life under normal atmospheric environment.
Q5: Can you do custom colors according to Pantone code?
Yes. We support Pantone color matching with PPG, AkzoNobel, Beckers paint system. Please provide your Pantone number or physical color sample for reference. MOQ will be higher for non‑stock special colors.
Q6: Will the coating crack during bending, grooving or drilling?
Qualified roller‑coated aluminum with PPG/AkzoNobel paint will not crack when bent within recommended radius. We suggest test bending before mass processing. Improper sharp bending may cause coating damage.
Q7: What is your MOQ for color coated aluminum coil?
For regular stock colors, small trial order is acceptable. For custom color coating with imported brand paint, MOQ is normally 2‑3 metric tons per color.
Q8: How about your packing for export?
Inner: PE film + moisture‑proof kraft paper with desiccant. Outer: Fumigated wooden pallets fixed with steel straps. Fit for sea container shipment, effective against dampness & mechanical damage.
Q9: What is your production lead‑time?
Stock items: Immediate delivery. New coating production order with imported paint: 20‑30 working days after deposit and color confirmation.
Q10: Can you provide third‑party inspection report?
Yes. ISO9001 certificate, coating thickness test report, salt‑spray test report for PPG/AkzoNobel paint can be offered. Third‑party inspection such as SGS is negotiable.
Q11: What is the standard coating thickness for color coated aluminum?
Polyester powder coating: total film thickness 60‑80μm. PVDF fluorocarbon coating: top coat + back coat total 25‑40μm. Back side also has protective primer to prevent oxidation; custom film thickness is available upon request.
Q12: What salt‑spray performance can your painted aluminum achieve?
Domestic premium paint: 500‑800 hours salt spray test. Imported PPG / AkzoNobel PVDF paint can reach 1000+ hours salt‑spray resistance, suitable for coastal high‑salt‑fog corrosive environment.
Q13: Why color difference happens between batches?
Tiny batch‑to‑batch color deviation is inevitable for coil coating. We strictly control ΔE value ≤2. For big projects, we suggest producing all materials in one single batch to minimize color difference. Physical color sample confirmation before mass production is highly recommended.
Q14: Does color coated aluminum come with protective film?
Yes, PE protective film is optional. Different film thickness & viscosity for channel‑letter bending, CNC drilling and cutting. Please remove protective film within 3‑6 months after receiving goods, avoid film aging sticking onto coating surface.
Q15: What storage conditions are required for color aluminum coils?
Store in dry, ventilated warehouse, keep away from rain, snow and high humidity. Keep coils upright on pallets, do not stack heavy goods on top. Moisture condensation will cause water‑spot defects on painted surface.
Q16: Which temper is better for color coated channel letter coil?
H24 is the most widely used temper. It balances flexibility and rigidity for bending, grooving and drilling. Too soft temper leads to letter frame distortion; too hard temper will cause coating cracking during forming.
Q17: Can color coated aluminum be welded?
Not recommended. High welding temperature will burn and destroy the paint coating. For channel‑letter production, mechanical riveting or screwing (drilling assembly) is the preferred connection method.
Q18: What causes roller marks on coated aluminum surface?
Roller marks are equipment‑related defects. Our QC team inspects every coil surface strictly before delivery. If you have strict surface requirements for visible signage face, please notify us in advance for enhanced surface inspection.
Our Advantages And Services
Efficient Equipment
Professional design team together with advanced production facilities and strict quality‑control systems. We operate 430‑480‑meter electrostatic spraying, fluorocarbon paint and powder‑coating production lines equipped with Henkel pretreatment systems and Ransburg automatic electrostatic spray systems. The roller‑coating line includes a 110‑meter oven with 9 independent temperature‑control zones. Our brand‑new CNC sheet‑metal workshop supports large‑volume output, with an annual production capacity up to 1.8 million square meters.
Strict Quality Control System (ISO9001:2015)
TMR Aluminum adheres to rigorous quality standards and enjoys solid market reputation. Every batch goes through standardized inspection to guarantee stable, reliable quality for global customers.
Manufacture Technology
We adopt Direct Casting (DC) and Continuous Casting (CC) processes for aluminum sheets, plates, coils, foils and aluminum discs. Both spray‑painting and roller‑coating technologies are available for colored aluminum products.
MOQ & Price
Flexible MOQ options. As a direct manufacturer, we supply a full portfolio of aluminum decorative products at highly competitive factory prices.
Packing
Products are wrapped with plastic film or kraft paper, with moisture‑proof desiccant inside against dampness and rain. Heavy‑duty wooden pallets with steel strapping prevent deformation during transit. Export‑grade fumigated wooden boxes and pallets are provided for overseas shipments.
Delivery
Stock items: Immediate shipment. Mill‑run production orders: 20‑30 working days lead‑time.
Shipping
We cooperate with experienced shipping partners to secure competitive freight rates. Professional packaging and shipment guidance help you avoid potential logistics risks.
OEM & ODM Service
Send us your drawings or share your requirements. Our team develops custom aluminum products matching your exact specifications.
After‑sales Service
Our responsive, professional sales team delivers reliable support. Premium after‑sales assistance is available throughout your whole project cycle.
