There is no exact value for this. Because the oxidation degree varies with the environment, it is not common in our daily life to have this kind of insulation aluminum sheet. However, in special industrial production fields and special processing industries, the auxiliary role of insulation aluminum sheet is very important.
The difference between thermal insulation aluminum sheet and general aluminum sheet is that it has high-quality thermal insulation effect. We all know that when winter comes, the sudden drop of environment will affect the production efficiency. Therefore, in some special production industries, the production personnel will use high-quality thermal insulation aluminum sheet to ensure the production efficiency.
1. Looking at the flatness of aluminum sheet unfolding, the smoother the better. The factors influencing the flatness of aluminum coil are aluminum coil sleeve: the aluminum coil with paper sleeve has better flatness and slightly higher price for bending and angle drawing without waste; The flatness of aluminum coil with aluminum sleeve is lower than that of paper sleeve. Some waste may be produced at the beginning and end of unwinding. The weight of the whole aluminum coil includes the weight of aluminum sleeve, but the aluminum sleeve can be recycled by the manufacturer.
2. Look at the gloss of the aluminum sheet, the brighter the aluminum coil, the better.
The purpose determines the thickness and material of the aluminum sheet. Now the aluminum sheet is often used in the insulation industry, so the diameter of the insulation pipe should be considered when selecting the aluminum sheet. The larger the diameter, the thicker the thickness of the aluminum sheet needs to be. At present, the commonly used aluminum sheet is 0.05 and 0.8mm, and the width is generally - m wide, which is convenient for construction.
In terms of material, if there are no special requirements for strength, you can choose 1060. If there are special requirements for strength and material, you can choose 3003 material with a higher price. However, due to the high price of other materials, the amount of anti-corrosion and thermal insulation aluminum sheet is not large. It is not recommended here.
How to see the quality of aluminum sheet: the quality of aluminum sheet can be identified by appearance, flatness and thickness tolerance. The surface of aluminum sheet is free of oil stain, color difference and scratch. This can be identified by the appearance when purchasing aluminum sheet. Therefore, it is recommended that users who have no experience in purchasing aluminum sheet can identify the quality of aluminum sheet by simple surface. They can choose the aluminum sheet with good quality, or they can lay the aluminum sheet flat on the ground to see whether there are ups and downs in the aluminum sheet. Good aluminum sheets have been corrected without obvious wavy lines, The thickness needs to be measured with a dry micrometer.