GB3531 is the national standard for steel plates for cryogenic pressure vessels. It stipulates in detail the ordering content, grade expression method, size, shape, weight and allowable deviations, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of steel plates for cryogenic pressure vessels. This standard is applicable to the manufacture of steel plates with a thickness of 5mm to 120mm for low-temperature pressure vessels between -196°C and <-20°C.
The characteristics of the GB3531 standard are mainly reflected in the following aspects:
1. Strict chemical composition control: GB3531 has strict requirements on the chemical composition of steel plates for low-temperature pressure vessels to ensure that the steel plates have good low-temperature toughness and other physical properties. By controlling the type and content of alloy elements, performance requirements under different usage conditions can be met.
2. High-quality production technology: In order to meet the requirements of standards, manufacturers will use advanced smelting and processing technology. Appropriate heat treatment technology can ensure that the structure of the steel plate remains stable after processing.
3. Wide range of applications: GB3531 standard is suitable for manufacturing low-temperature pressure vessels from -196°C to <-20°C. These containers are widely used in petroleum, chemical industry, natural gas, refrigeration and other fields. Therefore, this standard has strong practicality and market adaptability.
4. Integration with international standards: With the development of international trade, my country's steel plate standards for cryogenic pressure vessels are also constantly in line with international standards. The GB3531 standard referred to international advanced standards during the formulation process, making my country's steel plates for cryogenic pressure vessels more competitive in the international market.
5. Safety and reliability: Since low-temperature pressure vessels need to withstand greater pressure and low-temperature environments during operation, the GB3531 standard places high requirements on the safety and reliability of steel plates. Through strict production and quality control, we can ensure that the steel plate has excellent performance during use.
The application scope of GB3531 is mainly focused on manufacturing low-temperature pressure vessels within a specific temperature range. Specifically, it is suitable for manufacturing pressure vessels operating in the temperature range of -196°C to <-20°C. These pressure vessels are widely used in many fields such as petroleum, chemical industry, natural gas, refrigeration, etc., and are of great significance to ensure production safety and stable operation of equipment in these fields.
Since GB3531 has strict requirements on the chemical composition, smelting and processing technology, heat treatment process, etc. of steel plates, steel plates produced using this standard have excellent low-temperature toughness, high strength and good weldability, and can meet various low-temperature pressures. Requirements for the use of containers in extreme environments.
