Pre painted steel coil is a kind of fiber material, also known as colorfully coated carbon steel plate. It uses hot-rolled coil to continuously undergo surface deoiling, pickling, phosphating and other analytical chemical transfer treatments in an automatic production line, and then it is coated with analytical chemical industrial coatings and dried Baked products. The coating types of color-coated panels can be divided into: polyester (PE), silicon modified engineering plastic polyester (SMP), polyvinylidene fluoride (PVDF), high weather resistance polyester (HDP), light-burned dolomite colloidal solution.
1 Observe the thickness of the base steel plate and the thickness of the sub-film
The pre painted steel coil is composed of a base thick steel plate and colorful retroperitoneum or coating. Everyone has to fully consider the thickness of the base thick steel plate and the post-peritoneal coating at the beginning. The better color steel coil base thick steel plate is 0.02~0.05mm, and the thickness of the sub-film or coating is generally only 0.15mm or less. Because from the point of view of the use time of the damaged color steel coil, the thickness of the base thick steel plate is very important. However, some manufacturers who produce and process color steel coils generally work on the base thick steel plate and the color steel coil coating or sub-filming. They reduce the thickness of the base thick steel plate, but increase the thickness after the peritoneum to reduce the production of color steel coils. Cost, which greatly reduces the service life of color steel coils.
2 listen to the sound
Knock the pre painted steel coil with your fingers or with a bump. If the raw material of the color steel coil is poor, the sound coming out is muffled, the sound of the metal composite material is not obvious, and the sound of the color steel coil metal composite material with very good raw materials is relatively loud. , Noisy.
3 Observe the exposed edge of the pre painted steel coil
To obtain a color steel coil, I first observe whether the exposed stainless steel plate of the color steel coil, such as the cross section, is finely crystallized, whether it is gray, dark, and sludge. If the cross section is of fine crystallinity, the quality is relatively good.
4 look at the price
Everything is paid for. When we compare the quality of pre painted steel coil, price is one aspect, but there is no need to pay too much attention to price. If the price of one type of colored steel coil is much lower than others, then everyone must pay attention to this situation.
