ppgi coated coil
Color Coated Coil
Color galvanized coil induction refers to the process of applying a colored coating onto galvanized steel coils through an induction heating system. This process combines the corrosion resistance of galvanized steel with aesthetic appeal, making it suitable for applications where both durability and visual appearance are important, such as roofing, wall cladding, and decorative panels.
Production Process
|
Step |
Description |
|
Base Material Prep |
Clean and pre-treat galvanized steel coil. |
|
Primer Application |
Apply and cure primer for better adhesion. |
|
Topcoat Application |
Apply colored topcoat (e.g., polyester, PVDF). |
|
Curing |
Heat to solidify the coating. |
|
Inspection & Testing |
Check for defects and perform quality tests. |
|
Cutting & Coiling |
Slit and rewind to required dimensions. |
|
Packaging |
Wrap and secure for storage and shipping. |
Technical Specifications
|
Base Material |
Galvanized steel coil (zinc-coated). |
|
Coating Type |
Polyester, polyurethane, PVDF, or other paints. |
|
Coating Thickness |
Typically 15–25 µm (can be customized). |
|
Induction Heating |
Rapid curing at controlled temperatures (e.g., 200–250°C). |
|
Color Options |
Wide range of RAL or custom colors. |
|
Width |
Standard: 600–1500 mm (custom widths available). |
|
Thickness |
0.2–1.5 mm (can be customized). |
Standard Grades
|
Standard |
Grade Example |
Substrate Type |
Yield Strength |
Key Features |
|
EN (Europe) |
DX51D+Z/AZ |
Hot-dip Galvanized/Galvalume |
≤270 MPa |
General commercial grade, suitable for general construction and home appliance shells. |
|
DX52D+Z/AZ |
Hot-dip Galvanized/Galvalume |
≤270 MPa |
Good stamping performance, ideal for complex-shaped parts. |
|
|
DX53D+Z/AZ |
Hot-dip Galvanized/Galvalume |
≤270 MPa |
Deep drawing grade, suitable for refrigerator panels, TV backplates, etc. |
|
|
ASTM (USA) |
A653M CS |
Hot-dip Galvanized |
≤275 MPa |
General structural use, common in building envelopes. |
|
A792 CS |
Galvalume |
≤345 MPa |
High corrosion resistance, suitable for industrial plants and high-humidity environments. |
|
|
JIS (Japan) |
SGCC+Z27 |
Hot-dip Galvanized |
≤270 MPa |
Standard surface finish, used in general home appliances and construction. |
|
SGH340+Z27 |
Hot-dip Galvanized |
≤270 MPa |
High-strength grade, suitable for structural components (tensile strength ≥340 MPa). |
Coating Types
|
Coating Type |
Characteristics |
Applications |
|
Polyester (PE) |
Good durability and cost-effectiveness. |
Indoor and mild outdoor use (e.g., appliances, furniture). |
|
High-Durability Polyester (HDP) |
Enhanced UV and weather resistance compared to standard polyester. |
Roofing, wall cladding, exterior building panels. |
|
Polyvinylidene Fluoride (PVDF) |
Superior weather resistance, color retention, and chemical resistance. |
Premium architectural projects, coastal areas, industrial environments. |
|
Silicone Modified Polyester (SMP) |
Better durability than standard polyester but less than PVDF. |
Industrial and commercial buildings. |
|
Acrylic |
Good color retention and gloss. |
Home appliances, decorative panels. |
Advantages
|
Aesthetic Appeal |
Wide range of colors and finishes for design flexibility. |
|
Corrosion Resistance |
Zinc layer + organic coating provides excellent protection. |
|
Durability |
Resistant to UV rays, weathering, and scratches. |
|
Cost-Effectiveness |
Long lifespan reduces maintenance and replacement costs. |
|
Eco-Friendly |
Reduces the need for frequent repainting. |
Color Selection
Product Packing & Delivery
FAQ
Q1:What is the difference between color galvanized coils and pre-painted coils?
A1:Color galvanized coils are pre-painted galvanized steel coils, where the color coating is applied after galvanization.
Q2:How long does the color coating last?
A2:With proper maintenance, the color coating can last 10–20 years, depending on the environment and coating type.
Q3:Can I request custom colors?
A3:Yes, we can match specific color codes (e.g., RAL or Pantone) based on your requirements.
Q4:What is the lead time for color galvanized coils?
A4:The lead time depends on the order quantity and customization. Typically, it takes 2–4 weeks after order confirmation.
Q5:Do you provide test certificates?
A5:Yes, we provide test certificates for coating thickness, adhesion, and corrosion resistance.