How to distinguish the quality of color steel coil, you need to pay attention to the following points:
1. Observe the thickness of the coating or film and the thickness of the substrate of the color steel coil. The coating of good aluminum coil is basically only 0.02~0.03mm, and the thickness of the film is usually only 0.15mm or less. Inferior color steel coil is often in steel. Substrates and color steel coils are coated or coated, usually by reducing the thickness of the steel substrate, and spraying several coatings on the steel substrate or using very thick coatings, even color steel coils on the market The steel substrate is only 0.15mm, but the film is 0.4mm. If the base plate of the color steel coil is too thin, and the coating or film is too thick, the performance of the aluminum coil will decrease.
2. Observe whether the exposed steel such as the section of the aluminum coil is finely crystallized, whether it is gray, dark, and impurities.
3. Flick the color steel coil with your fingers, the metal sound of the color steel coil with better material is more obvious and crisp, the sound of poor material is dull, and the metal sound is not obvious.
4. Don't think that the lower the price, the better. You get what you pay for. As the saying goes, “Only buy the wrong thing, not sell it wrong”. Generally speaking, the price is less than 3 yuan, basically it can be judged that it is recycled steel, and even quite a lot of brands are under the pressure of market competition, and they do not hesitate to reduce costs by using recycled steel or OEM sales. Of course, we must also beware of profiteers who are shoddy, inflated retail prices, and then give consumers a larger discount. Many consumers are easily fooled.
