Photovoltaic bracket is also called solar photovoltaic bracket. Solar photovoltaic bracket is a special bracket designed for placing, installing and fixing solar panels in the solar photovoltaic power generation system. There are three main types of photovoltaic brackets: hot-dip galvanized, galvanized aluminum magnesium, and weathering steel brackets. Hot dip galvanizing process is a more stable and reliable steel surface treatment scheme to resist environmental corrosion, and it is also a more common and commonly used solar photovoltaic bracket anticorrosive material. The thickness of the traditional hot-dip galvanized bracket is generally greater than 2mm, and for areas with high wind, the thickness reaches 2.5mm. Galvanized aluminum magnesium light voltage bracket is the application of alloy metal sheet, the main components are zinc, aluminum, magnesium, etc., due to the addition of alloying elements, the product has the characteristics of notched self-healing, the metal surface also has the characteristics of chlorine and alkali resistance, wear resistance and corrosion resistance, therefore, can better cope with the desert, beach, saline-alkali and other areas of the harsh environment. "The biggest feature of galvanized aluminum magnesium bracket is cheap, reasonable use, can save costs, improve the safety of the power station, for high-quality power generation escort." Weathering steel photovoltaic bracket, as the name suggests, is made of weathering steel after research and development and production, with the mechanical properties of high-quality steel, atmospheric corrosion resistance is 2 to 8 times that of carbon steel, and the longer the use of time, the more prominent the corrosion resistance. The application of weathering steel for photovoltaic brackets not only eliminates the galvanized coating link, shortens the construction period and reduces the cost, but also avoids the environmental pollution of hot-dip galvanized processing. Because the surface of weathering steel is a dense rust layer formed by processing, the appearance is rust color, which is the method of "rust to stop rust", although the beauty is slightly lower than other stent products, but the characteristics of environmental protection, low cost and maintenance-free, but also in many projects have been applied.