What should you pay attention to when purchasing textured color-coated steel plates?

When purchasing textured color-coated steel sheets, the following points should be noted:
1. Inspect the thickness of the substrate and coating: Color-coated steel sheets typically consist of a substrate and a colorful film. Ensuring their thickness is crucial. High-quality color-coated steel sheets usually have a thickness of more than 0.5um, as this directly impacts their lifespan.
2. Test the coating quality: Employ a spectrophotometer or washing test to assess the quality of the galvanized coating. If cheaper metals are mixed in the coating, the spectrophotometer may not give an accurate reading, necessitating additional corrosion resistance tests.
3. Compare prices: Price is an important consideration when buying. If the price is significantly lower than market rates, special attention should be given to verify the product’s quality.
4. Focus on the material and thickness of the base steel plate: The choice of material and thickness of the base steel directly influences the load-bearing capacity of the color-coated steel sheet. State-owned large factories like Baosteel in China offer quality products but at a higher cost. Roof panels, wall panels, and interior liner panels used commonly have varying thicknesses; selection should be based on specific application scenarios.
5. Be aware of coating types: The content of aluminum-zinc or zinc in anti-corrosion coatings ensures the corrosion resistance of color-coated steel sheets. In recent years, coatings enriched with magnesium have demonstrated superior corrosion resistance.
6. Maintenance and upkeep: Regular cleaning of the color-coated steel sheet surface is necessary, avoiding the use of acidic or alkaline cleaners to preserve its condition.
In summary, when buying textured color-coated steel sheets, apart from focusing on the basic quality and price of the products, the specific usage environment and maintenance requirements should also be considered to ensure that the purchased color-coated steel sheets meet long-term usage demands.