Classified according to the role of Gas Cans in production:

Reaction pressure vessel (code R): used to complete the physical and chemical reactions of the medium.

Heat exchange pressure vessel (code E): used to complete the heat exchange of the medium.

Separate pressure vessel (code S): used to complete fluid pressure buffer, balance medium separation and gas purification.

Storage pressure vessel (code C, including spherical storage tank code B): used to store and contain gas, liquid, liquefied gas and other media. In pressure vessels, if there are more than two process principles at the same time, the varieties should be classified according to the main process.

Classified by installation method:

Fixed pressure vessel: a small gas storage tank with fixed installation and use position and relatively fixed operator and process conditions.

Portable pressure vessel: not only bears internal pressure or external pressure load during use, but also is affected by internal medium splash and external medium impact during handling. Shock and vibration loads are generated during transportation, so there are special requirements for structure, use and safety.

The various classification methods mentioned above only consider certain design parameters or service conditions of pressure vessels, but cannot fully reflect the degree of danger of pressure vessels. The degree of risk in pressure vessel design is also related to moderately hazardous products and their design pressure p and total volume V. The higher the pV value, the higher the explosion energy and the greater the danger of a small gas tank rupture. The manufacture and manufacture of containers have higher requirements for inspection, use and management.