1.For the storage of different  materia, tankl is divided into stee tankl, reinforced concrete tankand masonry tank.

Steel tanks are vertical (including vault and floating top cylinder), spherical shell (spherical) and horizontal (cylindrical). A vertical dome roof tank spherical tank top and a vertical cylindrical tank wall is mainly used for the storage medium is not volatile oil, such as diesel oil and similar class. The most commonly used volume is 1000 -10000m.

The floating roof tank is composed of a floating roof and a vertical cylindrical tank wall floating on the surface of the medium. The floating roof rises and decreases with the increase or decrease of the medium reserves in the tank. There is an annular sealing device between the outer margin of the floating roof and the wall of the tank. The medium inside the tank is always covered directly by the inner floating roof, thus reducing the volatilization of the medium. Mainly used for storage medium for volatile oils, such as gasoline and similar products. Generally, the volume of floating roof tank is relatively large. The floating roof can be divided into single plate type floating roof, double disc floating roof and float type floating roof and other forms.

A horizontal tank consists of an end cap and a horizontal circular or oval tank wall, usually used in production or gas stations. The volume of horizontal tanks is generally less than 100m³