For the current building materials market, there are many new building materials, but the variety of color-coated rolls is gradually becoming a popular choice. The important thing is that it can meet people's needs in all aspects. As people's requirements for building materials are getting higher and higher, people should pay attention to quality issues when purchasing building materials, so how to judge the quality of building materials is very important.

       1. Observe the thickness of the base material and coating on the color-coated steel coil: the color plate is composed of base material, color peritoneum or coating. We need to consider the thickness of the stroma and peritoneal coating. Preferred steel substrates range from 0.02mm to 0.05mm, and the coating or coating thickness is usually less than 0.15mm. The thickness of the substrate has a very important impact on the service time of the swatches. Color steel plates on some substrates are usually compounded or laminated with color steel plates to reduce the thickness of the base material, but increase the thickness of the peritoneum to reduce the production cost of color steel plates and greatly reduce the service life of color steel plates.

       2. Observe the edge leakage of the color steel plate: When taking the color steel plate, observe the exposed steel plate, such as the section, whether there are fine, gray, black and impurity crystals. The quality will be better if the cutting surface is crystal clear.

       3. Listen: Tap the colored steel plate with your finger or something good. The material of the color steel plate is poor, the sound is dull, and the metallic sound is not obvious. Color steel plate metal sounds loud and clear.

To sum up, the color-coated coil is a new type of building material with good environmental protection functions, and is widely used in roofs, walls, temporary houses, etc.