Ask about the matching of steel straps and metal outer protective layers during thermal insulation installation.
Thread Content
The requirements in SH/T 3010-2013 (red line indicates the part). Ask for advice: When the outer protective layer is aluminum alloy, is it more suitable to use galvanized steel strip (wire) or stainless steel strip (wire) as the binding material? Is there contact corrosion between the two combinations? The usage scenario is coastal areas.
According to the requirements of SH/T 3010-2013, it is recommended to use the same metal material as the outer protective layer as the binding steel strip in the thermal insulation installation. Therefore, when the outer protective layer is aluminum alloy, the same aluminum alloy steel strip as the outer protective layer should be used for bundling. This avoids electrochemical reactions and contact corrosion due to contact between dissimilar metals. However, if aluminum alloy steel strips cannot be used, it is recommended to use stainless steel steel strips because they have good corrosion resistance and are more suitable for use in coastal areas. At the same time, in order to prevent contact corrosion, it is necessary to note that there must be a certain gap between the strapping steel strip and the outer protective layer, and the contact parts must be insulated. .