Used in various sectors of the national economy such as petrochemical industry, energy industry, scientific research and military industry, pressure vessels generally consist of six parts: cylinder, head, flange, sealing element, opening and connection, and support. In addition, it is also equipped with safety devices, meters and internal parts for different production processes.

Application: The first type of alloy structural steel is used to make various machine parts and engineering components. This kind of steel has just right hardenability, so many of them are used to make parts of instruments with relatively large cross-sectional areas.