The pre-coated inner tank is also a common chest freezer inner tank material in daily life. The pre-coated inner tank is based on the steel inner tank with a layer of pre-coating added, and the appearance is white snow skin.
The pre-painted inner tank is essentially a steel plate, so it is stronger than the embossed aluminum plate in terms of strength and has a greater load-bearing capacity. Secondly, the pre-coated liner has a smooth surface due to a layer of pre-coating. Compared with embossed aluminum panels, there is no texture to trap dirt and dirt, and it is easier to clean up. In addition, because of the existence of pre-coating, the inner tank is not prone to corrosion and rust.
However, the steel plate with a pre-coated liner is weaker than the aluminum plate in terms of metal heat and cold conduction. Moreover, due to the uneven quality and workmanship of the pre-coating, some small manufacturers' pre-coating liners sometimes have pre-coating peeling off. In addition, the price of the pre-painted liner will be relatively more expensive than the embossed aluminum plate.
Stainless steel liners are generally used in relatively high-end freezers. Stainless steel liner, especially food-grade stainless steel, is the best choice in terms of appearance, texture, and user experience.
First of all, the stainless steel liner is better than the pre-painted liner and embossed aluminum plate in terms of service life and inner liner strength. Secondly, the stainless steel liner is generally made of food-grade stainless steel, which is safer during storage. And because the inner wall is smooth, the stainless steel liner will be more convenient for cleaning and defrosting after frosting.
The main disadvantage of the stainless steel liner is the price and cost. Since the price of the stainless steel liner, especially the food-grade stainless steel liner, is much higher than the other two types of liner, the price of the stainless steel liner freezer will be much higher than that of other liner freezers.