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Prepainted Galvanized/Aluzinc Steel Coil for sandwich walls is a high-end metal sheet designed for modern building envelopes. The Sandwich Wall PPGI PPGL Iron Coil Brick uses DX51D-DX53D high-strength substrates, presents realistic brick patterns such as red bricks, blue bricks, and cultural stones through digital transfer technology, and is covered with environmentally friendly polyester (PE) or fluorocarbon (PVDF) coatings. It is suitable for sandwich wall panels, metal roofs, curtain wall decoration and other fields, combining natural beauty and industrial durability.

Core advantages

Realistic brick pattern design to enhance the appearance of buildings

1:1 reproduction of natural brick and stone textures, supporting 20+ patterns such as red bricks, antique bricks, and marble patterns.

Matte/high-gloss surface treatment, color reproduction of more than 95%, visual effects comparable to real brick walls.

High-strength substrate, strong anti-deformation ability

DX51D (yield strength ≥ 245MPa) general type, suitable for conventional sandwich walls;

DX53D (yield strength ≥ 320MPa) deep drawing grade, suitable for complex curved surface modeling.

Military-grade protection performance

Galvanized layer ≥ 85g/㎡, salt spray test over 1000 hours, resist acid rain and sea breeze corrosion.

Fluorocarbon coating thickness ≥ 25μm, hardness 3H, scratch resistance, UV aging resistance.

Environmental protection and energy saving, efficient construction

Water-based ink complies with EU RoHS standards, no formaldehyde release, and is the preferred material for green buildings.

Can be directly cold-bent without additional decorative layers, saving more than 30% of construction costs.

Sandwich wall exclusive advantages

Low thermal conductivity (≤ 0.04W/(m・K)), improves building insulation performance.

Hydrophobic coating design reduces the risk of condensation in the sandwich layer and extends the life of the wall.

Technical parameters

Project Index

Substrate Galvanized (GI) / Alu-zinc (GL) steel plate (DX51D-DX53D)

Thickness 0.5-1.0mm (sandwich wall) / 0.6-1.2mm (roof)

Width 914-1250mm (customizable)

Coating Fluorocarbon (PVDF), polyester (PE), silicon-modified polyester (SMP)

Printing accuracy 600dpi, support CMYK/Pantone full color gamut

Bending performance T=0 (no crack, ASTM D522)

Fire rating B1 (optional)

Application scenarios

High-end residential: villa sandwich wall, townhouse facade decoration.

Commercial buildings: shopping mall curtain wall, hotel entrance canopy.

Industrial plant: clean room wall of food factory and electronics factory.

Public facilities: sound insulation and heat preservation wall of school and hospital.

Customized service

Color customization: provide standard brick pattern library or sample reproduction, support gradient/pattern design.

Function upgrade:

Thermal insulation coating (thermal conductivity ≤ 0.03W/(m・K))

Sound insulation coating (noise reduction ≥ 30dB)

Antibacterial coating (E. coli killing rate ≥ 99.9%)

Pattern development: support trapezoidal, wavy, tongue and groove special sandwich wall pattern mold opening.

Application case

A high-end villa area sandwich wall project

Product used: DX52D aluminum zinc steel coil (fluorocarbon coating + red brick pattern printing)

Solution:

0.8mm thick substrate cold-bent into trapezoidal sandwich wall panel

Fluorocarbon coating passed 1200 hours salt spray test, suitable for coastal humid climate

Red brick pattern design integrates with surrounding landscape to enhance building recognition

Results: Construction period shortened by 40%, wall insulation performance improved by 25%