Channel Letter Aluminum Coil, Bendable Prepainted Aluminum Strip Coil for LED Signage, 3D Channel Letter, Outdoor Advertising Sign & Storefront Letter Making

Core Advantages

• Excellent bending flexibility, can be shaped into straight lines, arcs and complex letter curves without paint cracking

• 3003 anti-rust aluminum substrate, never rusts outdoors, far more durable than galvanized steel strip

• Weather-resistant coating, UV-stable, no fading, no chalking for 8~15 years outdoor exposure

• Rich color options, matte / glossy / brushed / embossed textures available, match any brand visual identity

• Lightweight, finished channel letters are easy to install on wall, reduce load on building facade

• Stable width and thickness tolerance, compatible with automatic channel letter bending machines

• Good paint adhesion, supports notching, bending, riveting and welding during letter fabrication

• Customizable coil width, thickness and inner diameter to fit different bending machine specifications

Production Process

3003 aluminum big coil uncoiling → Degreasing cleaning → Chromium-free passivation drying → Primer coating & curing → Weather-resistant top paint coating & baking → Cooling → Protective film lamination → Precision slitting into narrow channel letter coils → Bending paint adhesion test → Winding into finished coils → Packaging & warehousing

Each batch undergoes bending test, salt spray test and color difference inspection before delivery.

Technical Parameters

Application

Commercial signage: Storefront channel letters, shop sign lettering, brand logo 3D letters

LED illuminated signs: Front-lit channel letters, back-lit halo letters, side-lit LED signs

Building facade: Large building lettering, corporate identity signs, mall exterior signage

Indoor display: Reception desk logo, office wall brand letters, exhibition booth signage

Special shapes: Custom curved letters, Arabic / Chinese / English multilingual channel letters

Export Packaging

Each channel letter aluminum coil wrapped with moisture-proof PE film and kraft paper, then packed into individual carton or wooden crate. Multiple coils arranged neatly on IPPC fumigated wooden pallets and fixed with plastic packing straps. Outer shipping marks mark alloy grade, thickness, width, color, coil ID, net weight, gross weight and batch number. Fumigation certificate, MTC and color sample confirmation available for overseas signage factory procurement.

FAQ

Q1: Can this aluminum coil be bent into complex letter shapes?

A: Yes, it is specifically designed for channel letter bending. It supports straight bending, arc curving and complex notching without paint cracking or substrate breaking.

Q2: What thickness is most commonly used for channel letters?

A: 0.4mm~0.6mm is the mainstream thickness. 0.4mm for small letters (under 30cm), 0.5~0.6mm for large storefront letters and building facade signage.

Q3: Is it compatible with automatic channel letter bending machines?

A: Yes, stable width and thickness tolerance, consistent coil tension during unwinding, fully compatible with Haas, Accu-Bend and other mainstream automatic bending machines.

Q4: How long does the color last outdoors?

A: Polyester PE coating lasts 8~10 years outdoors; PVDF fluorocarbon coating lasts 15+ years, recommended for coastal areas and high-rise building facades.

Q5: Can brushed gold and metallic colors be customized?

A: Yes, we support brushed gold, brushed silver, champagne gold, bronze and other metallic finishes, very popular for luxury brand storefront signage.