Standard for steel plates for low temperature pressure vessels

Low temperature pressure vessel steel plate is the key material for making pressure vessel working in low temperature environment. These plates need to have good mechanical properties and low temperature impact toughness to ensure structural integrity and safety at extremely low temperatures. Therefore, it is important to understand the standards and selection principles of low-temperature pressure vessel steel plates to ensure the safe operation of equipment.

First, the standard of low-temperature pressure vessel steel plate

The production and selection of steel plates for low-temperature pressure vessels must follow a series of strict standards. These standards are usually developed by international organizations or national standardization bodies to ensure that the quality and performance of steel plates meet the requirements of specific applications. Common low-temperature pressure vessel steel plate standards include EN 10028-3(European standard), ASTM A516/A516M(American standard), and GB 3531(Chinese standard). These standards specify the chemical composition of steel plates, mechanical properties, low temperature impact toughness and other key indicators, as well as production and inspection methods.

Second, the selection principle of low-temperature pressure vessel steel plate

Working environment temperature: Select the appropriate steel plate according to the ambient temperature of the pressure vessel. At different temperatures, the mechanical properties and low temperature impact toughness of the steel plate will change. Therefore, when selecting steel plates, it is necessary to ensure that its performance meets the requirements of specific temperatures.

Working pressure and capacity: The working pressure and capacity of the pressure vessel also have an important impact on the choice of steel plates. High pressure and large capacity containers need to choose steel plates with higher strength and toughness to ensure the safe operation of the equipment.

Medium corrosion: According to the corrosion of the medium in the pressure vessel, the steel plate with corresponding corrosion resistance is selected. Some media may have a corrosive effect on the steel plate, reducing its service life and safety. Therefore, when selecting steel plates, it is necessary to consider the corrosion of the medium and the corrosion resistance of the steel plate.

Manufacturing process and cost: Manufacturing process and cost are also factors that need to be considered when selecting low-temperature pressure vessel steel plates. Different steel plates may require different manufacturing processes and welding methods, which will affect the production efficiency and cost of the equipment. Therefore, when selecting steel plates, it is necessary to consider the feasibility and cost-effectiveness of the manufacturing process.

The standard and selection principle of low-temperature pressure vessel steel plate is very important to ensure the safe operation of equipment. When selecting steel plates, it is necessary to comprehensively consider factors such as working environment temperature, working pressure and capacity, medium corrosion, manufacturing process and cost. At the same time, it is also necessary to comply with relevant standards and specifications to ensure that the quality and performance of the steel plate meet the requirements of the specific application. Through scientific and reasonable selection, it can ensure that the low-temperature pressure vessel can still maintain the structural integrity and safety under extreme low temperature conditions, and provide a reliable guarantee for industrial production and people’s lives.