Standards for seamless steel pipes for pressure vessels

Basic concepts and applications of seamless steel pipes for pressure vessels:

Seamless steel pipes for pressure vessels are also called high-pressure boiler tubes, which refer to seamless steel pipes used to manufacture various pressure vessels and boilers. The main function of seamless steel pipes for pressure vessels is to transport media to various equipment under high temperature and high pressure, such as power station boilers, chemical equipment, nuclear power plant equipment, etc. Therefore, the performance requirements of seamless steel pipes for pressure vessels are very high, and they must have good mechanical properties, high temperature resistance, corrosion resistance and reliable welding performance.

Comparison of standards for seamless steel pipes for pressure vessels:

Different countries and regions have different technical requirements for seamless steel pipes for pressure vessels, mainly including indicators such as chemical composition, mechanical properties, pressure resistance, heat resistance, corrosion resistance, and weldability of pipes. The following is a comparison of standard requirements in China, the United States and Europe:

1. Chinese standard: GB/T 5310

GB/T 5310 is a Chinese national standard, suitable for the manufacture of seamless steel pipes for various high-pressure and ultra-high-pressure boilers, chemical and petrochemical equipment and other pressure vessels. This standard requires that the chemical composition of steel pipes meet international standards, and the mechanical properties and pressure resistance are higher than international standards. It also requires high temperature resistance, corrosion resistance and good weldability.

2. American Standard: ASTM A192
ASTM A192 is a US national standard suitable for the manufacture of seamless steel pipes for various pressure vessels such as high-pressure boilers, ultra-high-pressure boilers, heaters and heat exchangers. This standard requires that the chemical composition of steel pipes meet international standards, and the mechanical properties and pressure resistance are higher than international standards. It also requires high temperature resistance, corrosion resistance and weldability.

3. European Standard: EN 10216-2
EN 10216-2 is a European standard suitable for the manufacture of seamless steel pipes for various pressure vessels such as high-pressure and ultra-high-pressure boilers, chemical and petrochemical equipment. This standard requires that the chemical composition of steel pipes meet international standards, and the mechanical properties, pressure resistance, high temperature resistance and corrosion resistance are higher than international standards, but the weldability requirements are relatively low.

Scope of application and technical requirements of seamless steel pipes for pressure vessels:

Depending on different standards and scope of application, the technical requirements of seamless steel pipes for pressure vessels will vary. The following takes China's GB/T 5310, the United States' ASTM A192 and Europe's EN 10216-2 standards as examples to introduce their technical requirements and scope of application:

1. China standard: GB/T 5310
GB/T 5310 is applicable to the manufacture of seamless steel pipes for various high- and medium-pressure boilers, ultra-high-pressure boilers, chemical and petrochemical equipment and other pressure vessels. This standard requires that the chemical composition, mechanical properties and pressure resistance of the steel pipe are higher than the international standards, and also requires high temperature resistance, corrosion resistance and good weldability.

2. American standard: ASTM A192
ASTM A192 is applicable to the manufacture of seamless steel pipes for various high-pressure boilers, ultra-high-pressure boilers, heaters and heat exchangers and other pressure vessels. This standard requires that the chemical composition, mechanical properties and pressure resistance of the steel pipe are higher than the international standards, and also requires high temperature resistance, corrosion resistance and weldability.

3. European standard: EN 10216-2
EN 10216-2 is applicable to the manufacture of seamless steel pipes for various high and medium pressure boilers, ultra-high pressure boilers, chemical and petrochemical equipment and other pressure vessels. This standard requires that the chemical composition, mechanical properties, pressure resistance and corrosion resistance of steel pipes are higher than international standards, but the weldability requirements are relatively low.

Conclusion:

Seamless carbon steel pipes for pressure vessels are an indispensable part of various high-pressure vessels and boilers, and their technical requirements are very strict. According to the standard requirements of different countries and regions, their technical requirements and scope of application will also be different. At present, China GB/T 5310, US ASTM A192 and European EN 10216-2 standards are the most widely used standards. In actual production, appropriate standards and models should be selected according to specific use conditions and requirements.

Hunan Standard Steel Co., Ltd is a supplier specializing in a series of seamless tube products such as oil and gas tubes, pressure vessel tubes, and mechanical processing tubes. Seamless steel tubing products comply with Chinese, American, and European standards. We have advanced analytical testing instruments, online non-destructive testing facilities and a reliable quality assurance system to ensure product quality to the greatest extent.

Read more: American standard for low and medium pressure carbon steel boiler tubes