For the current construction market, there are many kinds of new buildings, but the diversification of color steel plate specifications is that it has gained a position in the construction industry, and has gradually become the necessary choice of building materials, the most important thing is that it can meet the needs of people in all aspects.Because people's requirements for building materials are higher and higher, there are more types of color steel plate specifications, such as 470 type, 600 type, 760 type, 820 type, 840 type, 900 type, 950 type, 870 type, 980 type, 1000 type, 1150 type, 1200 type, etc., and each factory is also actively studying more kinds of color steel plate specifications, in fact, when people buy We should pay attention to its quality, so we should first learn how to judge its quality. First of all, we should observe the thickness of the substrate and the thickness of the coating. The steel plate is composed of a substrate and colored peritoneum or coating. First of all, we have to consider the thickness of the substrate and the peritoneal coating. The better color steel plate substrate is 0.02 ~ 0.05mm, and the coating thickness is usually less than 0.15mm. Secondly, observe the leakage edge of the color steel plate. After getting a plate, I first observe whether the exposed steel of color steel plate, such as fracture surface, is fine crystal, gray, dark and impurities. If the section is fine crystal type, the quality is superior, so it is necessary to choose a better quality product.