The petrochemical industry primarily includes storage and transportation, refining and chemical processing, and ethylene engineering, among others. These sectors face some of the most complex and severe corrosion environments, especially for those located by the sea, which must withstand dual atmospheric corrosion from salt and sulfur. This places high demands on the corrosion protection of steel and other metal materials. The corrosion protection system in the petrochemical industry mainly involves various steel structures under atmospheric conditions, such as pipe racks, cracking units, and the exteriors of various storage tanks, as well as the interiors of crude oil tanks, intermediate product tanks, and finished product tanks, buried pipelines, high-temperature pipelines, and fire prevention measures.