How to judge the quality of galvanized steel sheet
Method one, observe the thickness of the substrate and the thickness of the coating.
The galvanized mild steel sheet is composed of a substrate and a colored coating or coating. We must first consider the thickness of the substrate and the coating layer. A better color steel plate substrate is 0.02-0.05mm, and the thickness of the coating or coating is often only 0.15mm or less. Because the thickness of the substrate is very important from the perspective of affecting the use time of the color steel plate. And some manufacturers make changes on the substrate and color steel plate coating or film. They reduce the thickness of the substrate, but increase the thickness of the peritoneum to reduce the production cost of the galvanized steel plate, which greatly reduces the service life of the color steel plate.
Method two, observe the leakage edge of the galvanized Hot Rolled Steel sheet.
Observing the leakage edge of galvanized steel sheet is also a relatively simple method. When we get a color steel plate, we can first observe whether the exposed steel of the color steel plate is finely crystallized, whether it is gray, dark, and impurities. If the cut surface is of fine crystallinity, the quality is superior.
