Low Temperature Bending Special Color Coated Aluminum Coil

1. Core Advantages

• Ultra-flexible modified low-temperature resistant paint film

  Special high-ductility resin is added to the coating system, the paint film can withstand cold forming below zero degrees Celsius without cracking, completely solving the pain point of ordinary aluminum coil easy paint burst in winter processing.

• Excellent deep drawing & bending performance

  Suitable for complex deep drawing, tight bending, edge folding and stamping processes; no paint peeling at bending creases, greatly improving the yield rate of finished products for cookware and metal tile manufacturers.

• Stable low-temperature substrate performance

  Adopts fully homogenized H24/H26 aluminum alloy with stable internal stress, the substrate will not harden and brittle at low temperature, matching the flexible coating to realize integrated cold forming performance.

• Reliable daily anti-corrosion performance

  The dense PE coating can resist weak acid, alkali, moisture and air oxidation, effectively protecting aluminum substrate from rust for long-term use in cold and humid northern environments.

• Uniform and smooth coating surface

  Adopts precise two-coating two-baking roller coating process, fine paint film without particles, pinholes and flow marks, small color difference for large-area splicing products.

• Multiple customizable thicknesses & colors

  Coil thickness ranges from 0.3mm to 2.0mm, supports all standard RAL solid colors, metallic and matte finishes, can match customer cold-region engineering color requirements.

• Complete anti-scratch protective film

  Full surface covered with transparent PE protective film, prevent scratches, dust and fingerprints during transportation, storage and low-temperature processing.

• Compatible with all conventional processing equipment

  Can be directly used on slitting machines, bending machines, deep drawing presses and tile forming machines without adjusting production parameters, no extra processing cost.

2. Production Process

Aluminum base coil uncoiling → Multi-stage circulating degreasing & surface cleaning → Environment-friendly non-chromium passivation treatment → Constant temperature hot air drying → Flexible low-temperature resistant PE primer roller coating → High temperature curing → Ultra-flexible top coat coating → Secondary constant temperature baking → Natural cooling to room temperature → Dust-proof protective film lamination → Precision rewinding → Low-temperature bending simulation test → Coating thickness & color difference inspection → Full surface defect screening → Moisture-proof export packaging

The production line adds a special low-temperature forming simulation inspection procedure before delivery to ensure every batch of coil can pass cold bending test without paint cracking.

3. Standard Technical Parameters

4. Main Application Fields

1. Cold region building engineering: Northern metal roof tiles, cold area exterior wall panels, snowfield workshop enclosure boards

2. Cookware manufacturing industry: Deep drawing aluminum blanks for frying pans, baking trays, stainless steel composite pot liners

3. Mechanical & electrical equipment: Outdoor equipment casings, agricultural machinery shell panels, cold-region power distribution cabinet plates

4. Winter processing manufacturers: Factories without constant temperature processing workshop, seasonal batch production of metal decorative parts

5. Prefabricated construction: Mobile cold storage enclosure plates, prefab house wall and roof decorative aluminum sheets

5. Export Packaging Standard

Each low temperature bending special color coated aluminum coil is wrapped with multi-layer moisture-proof PE film and thick neutral kraft paper to avoid frost and moisture damage during long-distance cold-region transportation. The coating surface is fully covered with anti-scratch protective film to prevent friction scratches. Coils are fixed firmly on fumigated wooden pallets with high-strength steel belts to prevent loose rolling and deformation in cold and bumpy logistics. Clear shipping marks are printed including alloy grade, thickness, width, color code, net weight, gross weight and batch number. Complete fumigation certificate, MTC material test certificate and full set customs clearance documents can be provided for overseas customers. Narrow slit small coils are packed into independent sealed cartons for separate protection.

6. Inspection & After-sales Service

We implement seven strict pre-shipment inspection procedures: coating thickness detection, color difference comparison, cross-cut adhesion test, low-temperature bending simulation test, salt spray corrosion resistance test, flatness inspection and full surface defect screening. Complete supporting documents including Mill Test Certificate, low-temperature flexibility test report, RoHS environmental certificate, commercial invoice and packing list can be supplied for customer factory audit and customs clearance. Our professional technical team provides free forming parameter guidance for low-temperature processing and deep drawing production at any time. If paint cracking, coating peeling or surface quality defects are confirmed within 7 working days after receiving goods, we will reply within 24 hours and provide targeted solutions such as re-production, supplementary shipment or reasonable compensation.

FAQ

Q1: What is the difference between this coil and ordinary PE coated aluminum coil?

A: Ordinary PE coil will crack when bent at low temperature below 0℃; this product adopts ultra-flexible modified coating, which can pass 180° tight bending test at -10℃ without paint burst, specially for cold climate processing.

Q2: Can it be used to make deep drawing cookware such as frying pans?

A: Yes, the excellent stretchable paint film and stable aluminum substrate are very suitable for deep drawing forming of various cookware aluminum blanks.

Q3: Can you customize special cold-resistant colors for northern engineering projects?

A: We support all RAL color customization, and adjust coating flexibility formula according to customer local minimum temperature to match different cold climate requirements.

Q4: Is the coil still suitable for outdoor long-term use in cold and humid areas?

A: The PE coating has good anti-corrosion and moisture resistance, it can effectively resist frost, snow and air oxidation for long-term outdoor service in cold regions.

Q5: What test reports can you provide for foreign buyers’ audit?

A: We can provide MTC, low-temperature bending performance test report, RoHS certificate, salt spray resistance report and complete export customs clearance documents.