Prepainted Steel Coil(PPGI, PPGL)

Al-Zn Coated Steel Sheet  presentation         

Al-Zn Coated Steel Sheet


A pre-coated steel sheet produced by hot-dip coating Al-Zn alloy layers (optimized Al-Zn composition) on both sides of cold-rolled steel substrates with various strength and thickness specifications.
The surface exhibits a highly decorative, lustrous silver-gray finish with uniform patterns and an embossed texture.
This pre-coated steel sheet combines the optimal performance of aluminum-zinc alloy, offering enhanced protection and aesthetic appeal for industrial and architectural applications.

PPGI Steel Coil Specification.


Substrate GL (galvalume iron)
Grades DX51D+AZ,S220GD +AZ,S250GD +AZ,S280GD +AZ,S320GD +AZ,S350GD +AZ,S550GD +AZ
Thickness Range: 0.13mm to 2.0mm
Width Range: 600mm to 1500mm
Diameter Φ508 mm/Φ610 mm
Coating Thickness 60-200 g/㎡
Coil Weight: 3-25 ton
Paint Option: Polyester(PE),HDP, SMP, PVDF
Color Options: RAL color (custom color available)
Paint Thickness Top paint:10-25μm , Back paint: 5-20 μm
Surface Finish: Glossy, matte, or textured
Custom Available in custom sizes, coatings, and finishes.

special pattern





Grayish-white Light blue Silvery Sky blue



Features




Al-Zn Coated Steel features:

It features a highly decorative, lustrous silver-gray surface with uniform patterns and an embossed texture.
1. Thermal Reflectivity: Twice the heat reflectivity of galvanized steel, ideal for insulation.
2. Heat Resistance: Withstands temperatures over 300°C, suitable for chimneys, ovens, and light fixtures.
3. Corrosion Resistance: Aluminum forms a dense alumina layer to protect against corrosion when zinc wears.
4. Cost Efficiency: 55% Al-Zn coating offers 3% larger coverage than Zn at equal weight and thickness.
5. Paintability: Excellent paint adhesion without pre-treatment.
6. Aesthetic & Workabilit*: Combines a sleek silver finish with processing and properties similar to galvanized steel.

Product Application:

Aluminum-zinc coated coils are widely used in diverse industrial as below,

  • Construction:roofs, walls, garages, sound barriers, pipes, prefab houses.
  • Automotive: mufflers, exhaust pipes, fuel tanks, truck bodies.
  • Appliances:refrigerator backplates, gas stoves, AC units, LCD/LED components.
  • Agriculture:livestock shelters, granaries, greenhouse pipes.
  • Others:thermal insulation covers, heat exchangers, water heaters.
  • Offering durability and corrosion resistance, they serve diverse industrial needs.

Color and Patten Option:
Customizable PPGL color coated coils include solid colors (RAL/sample) and printed patterns (wood, stone, etc.), with diverse popular options.



Standard Colors




we can customize the color according to you sample,the following colors are just examples


Sky blue Peacock blue Light blue Bright red Brick red Orange Broadleaf green Deep bean green








Dull grey Silver grey Silvery Spotlessly white Ivory tint Medium grey Aged patina


More colors:







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Addr: China,Suzhou City, Industrial Park


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