Color-coated panels require 48 inspection procedures in 5 categories. So, what are the 5 categories and 48 inspection procedures? Usually, from raw materials entering the factory to finished products leaving the factory, the category refers to the inspection of the substrate from entering the factory to before going online: mainly including thickness, width and other appearance quality and material, Coating adhesion, coating weight and other internal quality testing. The second category refers to the testing of coatings from entering the factory to before going online: mainly including the color difference, gloss and basic performance testing of the samples shipped with the goods.

The second type refers to the online detection of the substrate: mainly including board type and board surface inspection, such as whether there are defects such as wave edges, loose edges, bulges, plate patterns, zinc, zinc lines, and whether they are oxidized and blackened, etc. The fourth type refers to coating On-line inspection of layers: mainly includes color difference, gloss, coating thickness, coating uniformity, etc., and at the same time, it is necessary to monitor whether there are appearance defects such as scratches, pressure pits, missing coatings, and waste that affect the use. The fifth category is color coating The most critical part of board quality inspection is the performance inspection of the color-coated product itself, which mainly includes the tests of coating adhesion, coating hardness, solvent resistance, corrosion resistance, and aging resistance. Due to the limitation of the detection complexity and the long detection time, it is generally carried out by sampling detection. In addition to the aging resistance and corrosion resistance which belong to the random inspection items, all the above-mentioned inspections, each coil will have detailed records, and will be recorded in detail in the product quality documents by the quality inspectors for future inspection. HUNGTHAI metal’s color-coated panels Strictly implement the national standard, each product goes through 5 categories and 48 inspection procedures to ensure that each product leaves the factory with zero defects.