Cold storage panels are generally pre-produced by manufacturers and have fixed lengths, widths, and thicknesses. High and medium-temperature cold storage typically uses 10 cm thick panels, while low-temperature and freezing storage generally uses 12 cm or 15 cm thick panels. Therefore, if the panels are not pre-ordered, attention should be paid to the panel density and steel plate thickness during procurement. Reputable manufacturers generally use steel plates with a thickness of 0.4 mm or more. The foaming density of cold storage panels, according to national standards, is 38-40 kg/m³.
The three most important factors for cold storage panels are their density, the thickness of the steel plates on both sides, and their load-bearing capacity. Higher density cold storage insulation panels require more polyurethane foam, increasing the thermal conductivity of the polyurethane board, thus reducing insulation performance and increasing cost. Conversely, insufficient foaming density reduces the load-bearing capacity of the cold storage panel. According to tests by relevant national departments, the standard foaming density for polyurethane cold storage insulation panels is generally 35-43 kg/m³. Some manufacturers reduce the thickness of the color steel in order to cut costs. However, the reduced thickness of the color steel directly affects the service life of the cold storage. Therefore, it is essential to determine the thickness of the color steel when selecting cold storage panels.
