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News
Prepainted galvanized steel coil is a composite material known as color coated steel coil. The surface is pretreated by chemical degreasing and chemical conversion treatment. Then paint the surface with a layer or layers of organic coating, followed by curing process. There are several types of prepainted galvanized steel coil: polyester (PE), silicon modified polyester (SMP), polyvinylidene fluoride (PVDF), high durability polyester (HDP). How to identify prepainted galvanized steel coil good or bad? Here today, we will share some tips for you.
1. See the thickness of the substrate and coating thickness
At first, we have to consider the thickness of the substrate and the coating of the peritoneum, better thickness of substrate is 0.02mm to 0.05mm. Coating thickness is often 0.15mm or less often. The thickness of the substrate is very important. However, some prepainted galvanized steel coil manufacturers tend to reduce the thickness of the substrate but increase the thickness of the peritoneum to reduce production costs, which greatly reduces the lifetime of prepainted galvanized steel coil.
2. Listen to the sound
With a finger or with a hard object to knock the coil, if the sound is boring but not obvious metal sound, then it is poor product. Better prepainted galvanized steel coil is relatively loud and crisp sound.
3. Price
When you compare the quality of prepainted galvanized steel coil, price is another factor. But price is not the most important. If the price is much lower, then we will have to pay attention.
Sino East is a certificated prepainted galvanized steel coil manufacturer who has an efficient team. You are welcome to visit our factory at DaQiuzhuang Industry, Park, Tianjin, China. We look forward to cooperating with you.
Tel: +86 18622088833
Email: sinoeast3@163.com
Skype: paulpaul120481