Reasonable material selection can reduce costs in a limited way while meeting the requirements for use. Unreasonable material selection can lead to increased costs or substandard products. Therefore, customers should attach great importance to the importance of reasonable material selection. Shandong Guanzhou provides pre-sales technical services and provides professional opinions and suggestions on customers' material selection.

　　1. The indicators of material selection of color-coated panels mainly include: mechanical properties, substrate type and coating weight, front coating performance and back coating performance.

　　2. The selection of mechanical properties is mainly based on the use, processing method and degree of deformation. When selecting materials, the strength, formability and bearing capacity of color-coated sheets should be considered. Common processing methods include shearing, bending, rolling, etc., so comprehensive consideration should be given when selecting materials. In addition, it should be noted that increasing the mechanical properties and storage time of color-coated sheets may vary.

　　3. The choice of substrate type and coating weight is mainly based on the use, corrosiveness of the use environment, service life and durability. The coating weight should be determined according to the corrosiveness of the use environment. Substrates with good corrosion resistance and large coating weight should be used in a highly corrosive environment to ensure the specified service life and durability.

　　4. The selection of front coating performance mainly refers to the selection of coating type, thickness, color difference, gloss, hardness, flexibility/adhesion, durability and other properties. The performance of reverse coating is usually selected by the supplier according to the use and use environment. Generally speaking, in terms of coating durability, polyvinylidene fluoride > high durability polyester > silicon modified polyester > polyester.

　　5. In general, compared with hot-dip galvanized substrates, hot-dip 55% aluminum-zinc and galvanized aluminum-magnesium substrates have better corrosion resistance, but 55% aluminum-zinc substrates should be used with caution in alkaline environments.

　　6. Special environments with high corrosiveness such as ceramic factories, pickling workshops, electroplating workshops, papermaking workshops, dyeing rooms, tanning workshops, etc., as well as chemical plants, smelters, gas furnaces, thermal power plants, brewing workshops, steam environments, and industrial dust environments. It is recommended to choose 55% high-zinc aluminum-zinc or galvanized aluminum-magnesium substrates within 1000 meters from heavy industrial areas and coastlines.