How to choose the thickness of hot-dip galvanizing for photovoltaic brackets?
Hot-dip galvanizing is an important quality and technical indicator for photovoltaic brackets, as it directly affects the safety and durability of the structure.
Currently, photovoltaic brackets are generally made from carbon steel or aluminum alloy. Hot-dip galvanizing is typically applied to carbon steel (while aluminum alloys usually undergo anodizing, with the oxide film thickness generally ranging from AA10 to AA15). The carbon steel used is usually of grades Q235 and Q345. The material is processed into brackets through a series of steps such as cold bending, welding, and hot-dip galvanizing. The thickness of the bracket is typically greater than 2mm (for areas with strong winds, such as coastal regions or high-rise buildings, a thickness of at least 2.5mm is recommended to prevent the risk of tearing at the steel connection points during strong winds).
The hot-dip galvanizing process is a stable and reliable method for protecting steel surfaces from environmental corrosion. Many factors influence the thickness of the galvanizing layer, such as the composition of the steel substrate, surface condition (e.g., roughness), internal stress of the substrate, and geometric dimensions. Among these factors, the thickness of the substrate has a significant impact on the thickness of the galvanizing layer. In general, thicker steel plates tend to have a thicker galvanizing coating.