Pre-Coated Sheets
- Process: Metal sheets are coated with a layer of paint, plastic, or other protective material before being formed into final products.
- Coating: The coating is applied using techniques such as roll coating or spray painting.
- Thickness: The coating is typically thin, ranging from a few microns to several hundred microns.
- Purpose: Pre-coated sheets provide corrosion protection, aesthetic appeal, and durability. They are used in applications such as roofing, siding, and appliances.
- Advantages:
- Consistent and uniform coating
- Excellent corrosion resistance
- Wide range of colors and finishes
- Improved durability and lifespan
- Cost-effective for mass production
Granulated Sheets
- Process: Metal sheets are coated with a layer of granulated material, such as stone chips or ceramic particles.
- Coating: The coating is applied by sprinkling or embedding the granules into a liquid adhesive.
- Thickness: The coating is typically thicker than pre-coated sheets, ranging from several millimeters to several centimeters.
- Purpose: Granulated sheets provide texture, skid resistance, and UV protection. They are used in applications such as flooring, countertops, and exterior walls.
- Advantages:
- High durability and abrasion resistance
- Non-skid surface for safety
- Good insulating properties
- Aesthetically pleasing with a variety of textures and colors
- Suitable for both indoor and outdoor use
Key Differences
- Coating material: Pre-coated sheets have a thin, smooth coating, while granulated sheets have a thick, textured coating.
- Coating process: Pre-coated sheets are coated before forming, while granulated sheets are coated after forming.
- Purpose: Pre-coated sheets provide protection and aesthetics, while granulated sheets provide texture, durability, and insulation.
- Applications: Pre-coated sheets are common in roofing, siding, and appliances, while granulated sheets are used in flooring, countertops, and exterior walls.
- Cost: Pre-coated sheets are typically more cost-effective for mass production, while granulated sheets may be more expensive due to their thicker coating.