Pressure vessel, English: pressure vessel, refers to the inclusion of gas or liquid, carrying certain pressure airtight equipment, is a kind of special equipment. Why is it called special equipment? Because it is more special, the risk is much larger than other equipment, so you need the national special equipment management department for the record. This time, we have a different perspective on the knowledge of pressure vessels, so that it is interesting and convenient for you to remember the point of knowledge; — — to listen to “ pressure vessel ” readme.