1. Different varieties of top paint have different hardness, flexibility, adhesive force and durability, etc. The top paint of colour galvanized steel coil can be impacted by the usage, corrosivity in service environment, service time, durability, process way and deformation degrees.
2. Different bottom paint have different adhesive force, flexibility and corrosion resistance. Suppliers select bottom paint based on production process, application, corrosivity in service environment, matching relation with finishing coat.
3. The corrosion resistance increases with the increase of the coating thickness layer. This can be decided based on the corrosivity in service environment, service time, durability and so on. For example, the corrosion rate of the product accelerates in industrial zone or coastal region due to sulfur dioxide gas or salinity in the air. And accordingly, the service time will be impacted.
Any need for the colour galvanized steel coil, please feel free to contact us. CAMELSTEEL will provide the most rational and appropriate purchasing suggestions according to the specification, usage, application place and other details you provide.