1: observe the thickness of the substrate and the thickness of the film
Color steel plates are made up of substrates and colored peritoneum or coating. We first need to consider the thickness of the substrate and the peritoneal coating. The relatively good color steel substrate is 0.02~0.05mm, and the thickness of the coating or coating is usually less than 0.15mm. Because the thickness of the substrate is very important from the time of affecting the color steel plate. Some manufacturers change the substrate and color 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 plate, which greatly reduces the service life of the color plate.
2: To observe the leaking edge of color plate
To get a piece of color steel plate, I first observe whether the color steel plate exposing steel, such as section, whether crystal is fine, whether it is gray, dark and impurities. If the section is finely crystallized, the quality is superior.
3: listen to the sound
With finger or hard material to knock color steel plate, color plate material if poor, then the sound is dull, metal sound is not obvious, better material color steel plate metal sound is relatively loud, crisp.
4: check the quality certificate of color steel plate
Is there a test standard for the relevant departments? If possible, try to inspect the color steel plate manufacturers. Look at what the enterprise environment is and whether it is regular. What is the reputation of this enterprise on the market?
5: look at the price
Everything is a penny. When we compare the quality of color steel plate, the price is on the one hand, but do not pay too much attention to the price. If the price of a color steel plate is much lower than others, then we should pay attention to it.
