Painted volume is very popular now, and now I see it showing a divergent wind direction. With the stability of the pre painted steel coil market in the northern region, the demand is not yet available, and the price of the color coated coil is also weak. The key factor affecting the price trend of color coated rolls is the price of raw materials.
Compared with building boards, pre painted steel coil have higher elongation, bending strength and r and n values. In addition, it also requires strong adhesion between the film and the substrate, a certain flexibility, and correspondingly low hardness. The surface layer is usually a defect surface pressure point defect. This kind of defect is the use of color spray. After cooling the curling conditions, the curling tension causes the spray surface to be slightly deformed and the surface is rough, reflecting the visual effect of the pressure point type. As the storage time of the steel plate increases, the slight pressure point defect of J will gradually disappear. However, even the above measures can not eliminate more serious pressure point defects, which will affect the user's use.
The working pressure point is a defect in the processing process. To find the cause of the defect and the harmful elements, it is necessary to terminate the experiment, endanger the production planning, and increase the cost of the product. Therefore, it is necessary to simulate, copy and evaluate laboratory defects, and find the causes and elements of harmful defects from all aspects.
PPGI steel coils are used as raw materials, and the national steel market price has an important relationship. We take stability as the main price. So far, the average price of the national steel market was a week ago, and the price of Jiangsu steel coils has also been a continuous and stable phenomenon. The trading volume of color steel is relatively large, and business sentiment is now very cautious. However, judging from the current price situation, most people worry about the continuity of the color steel coil price. In the near future, the digestibility of steel stocks will be the key to the price trend of color steel coils.
