What material is the pressure vessel generally?

Pressure vessel refers to a closed machine equipment that contains vapor or liquid and bears a certain working pressure. In order to implement innovation management and safety supervision and inspection more rationally, pressure vessels are divided into three categories in China "Pressure Vessel Safety Supervision Regulations" based on pressure, material adverse effects, and efficacy in manufacturing.

Different requirements are made for each type of pressure vessel in the design plan, the whole process of production and manufacturing, and its new inspection items, contents and methods. The pressure vessel has implemented the import product safety and quality approval rules and regulations, and the products that have not obtained the import safety and quality business license are prohibited from being imported. According to the new TSG21-2016 "Fixed Pressure Vessel Safety Technical Supervision Regulations", the first group of substances should be divided into the first group of substances and the second group of substances, and then according to the working pressure and capacity of the division type I, II, and III class.

The pressure vessel is a closed vessel that can bear the force. The main purpose of pressure vessels is extremely common. It has key influence and efficacy in many units such as industrial production, civilian use, military use and many other scientific research industries. Among them, the chemical industry and crude oil chemical industry have the largest selection. Pressure vessels used in the crude oil chemical industry alone account for about 50% of all pressure vessels. In chemical plants and petrochemical equipment, pressure vessels are critical for the entire process of heat conduction, convection heat transfer, and reflection, as well as for storing and transporting vapor or vaporized vapor with working pressure; in other industrial production and Civilian industries are also widely used, such as air compressors. Various special refrigeration compressors and auxiliary boilers of refrigeration units (cooling towers, oil pressure buffers, oil and gas separators, steam storage tanks, air conditioning evaporators, liquid coolant storage tanks, etc.) are all pressure vessels.