Steel sealed containers used to store liquid or gas are steel storage tanks. Steel storage tank engineering is an essential and important infrastructure for 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, and 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 used to store various liquid (or gas) raw materials and Special equipment for finished products cannot be produced normally without storage tanks for many enterprises, especially the national strategic material reserves are inseparable from storage tanks of various capacities and types.