Steel sealed containers used to store liquids or gases are steel storage tanks. The steel storage tank project is an indispensable and important infrastructure for the petroleum, chemical, grain and oil, food, fire protection, transportation, metallurgy, national defense and other industries. Our economic life is always inseparable from large and small steel storage tanks. The important role that steel storage tanks play in the development of the national economy is irreplaceable. With the continuous development of the storage tank industry, more and more industries and enterprises have used storage tanks, and more and more enterprises have entered the storage tank industry. Steel storage tanks are special equipment for storing various liquid (or gas) raw materials and finished products. For many enterprises, normal production cannot be achieved without storage tanks, especially the national strategic material reserves are inseparable from storage tanks of various capacities and types. Most of my country's oil storage facilities are based on above-ground storage tanks, and most of them are metal structures.