As early as the standard GB 1727 "General Preparation Method", the materials for preparing general paint films, the surface treatment of the substrate, etc. are specified. The choice of the substrate is the use of tinplate. However, the quality of tinplate sheets on the market is uneven, and the price gap is also sky-high.
The standard clearly stipulates that the tinplate should meet the requirements of GB2520. The amount of tin plating is E4, the hardness level reaches T52, the thickness is about 0.2~0.3, and the size is 25mm×120mm, 50mm×120mm or 70mm×150mm. In actual laboratory use, two thicknesses of tinplate plates are selected, one is 0.28mm and the other is 0.35mm. In terms of size, it is as popular as the three types stipulated in the standard. Formal test-grade tinplate will mark the source of raw materials and various performance indicators. The following is a tin plate that was actually shot by the North and South Tide, let's take a look:
North and South Tide has always followed the principle of making industry information more transparent. Therefore, we encourage all manufacturers to provide users with more comprehensive and accurate information, instead of just one steel plate, one price, and one size. We welcome manufacturers who are willing to cooperate with Beichao to bring a fresher atmosphere to the instrument industry.
