How to judge the quality of color coated steel coils

Color coated steel coil is a kind of composite material, also called color-coated steel plate, which is made by using strip steel to continuously undergo surface degreasing, phosphating, and other chemical transfer treatments on the production line, then coated with organic paint and baked. The coating types of color steel coils can be divided into polyester (PE), silicon modified polyester (SMP), polyvinylidene fluoride (PVDF), high weather resistance polyester (HDP), and clinker sol. How to judge the quality of prepainted steel coils! The color steel coil factory teaches you a few tricks.

1. Observe the thickness of the substrate and the thickness of the coating

The color steel plate is composed of a substrate and a colored peritoneum or coating. We must first consider the thickness of the substrate and peritoneal coating. A better color coated 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 of color steel plates tend to work on the substrate and the 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 color steel plate, which greatly reduces the use of the color steel plate. Life is over.

2. Listen to the sound

Tap the color steel plate with your fingers or with a hard object. If the material of the color steel plate is poor, the sound will be dull, and the metal sound is not obvious. The metal sound of the color steel plate with better material is relatively loud and crisp.

3. Observe the leakage edge of the color steel plate

When I get a color steel plate, I first observe whether the exposed steel such as the cross-section of the color steel plate is finely crystallized, whether it is gray, dark, or impurities. If the cut surface is of fine crystallinity, the quality is superior.

4. Look at the price

Everything you pay is what you pay for. When we compare the quality of colored steel plates, the price is one aspect, but we should not pay too much attention to the price. If the price of a color steel plate is much lower than others, then we must pay attention to it.

5. Check the quality certificate of the color steel plate

Whether there are inspection standards of relevant departments. If possible, try to visit the color steel plate manufacturer on-site. See how the business environment is and whether it is formal. Ask about the reputation of this company in the market.

If you are interested in our color-coated steel coils, pls kindly contact us.