What is a pressure vessel?
A pressure vessel is a closed device that contains gas or liquid and bears a certain pressure. It is a closed container that can withstand pressure and is usually composed of parts and components such as a cylinder, a head, a pipe, and a flange. In order to distinguish it from general containers (normal pressure containers), only containers that meet the following three conditions at the same time are called pressure vessels:
(1) The working pressure of the container is greater than or equal to 0.1MPa;
(2) The inner diameter of the container is not less than 150mm;
(3) The working medium is gas, liquefied gas, or liquid with a maximum working temperature greater than or equal to the standard boiling point.
