High pressure boiler tube material

The quality standards of high-pressure boiler tubes manufactured by Chinese seamless steel pipe manufacturers are based on the regulations of GB5310. This standard clarifies several main materials required for steel pipes used in high-pressure boiler tube manufacturing.

1) 20G is a commonly used material suitable for steel pipe manufacturing in high-pressure environments.
2) 20MnG and 25MnG enhance the strength and toughness of the material and are suitable for applications that bear greater pressure.
3) 16Mn and 15Mog are also common choices. They have good plasticity and toughness while ensuring strength.
4) For high-level heat-resistant materials, 15CrMo and 15CrMoG have higher heat resistance and corrosion resistance, and are suitable for high-pressure boilers with high temperature and chemical stability requirements.
5) 12Cr1MoV and 12Cr1MoVG are widely used in the manufacturing of components for high-temperature and high-pressure boilers due to their excellent oxidation resistance and high-temperature strength.
6) Cr5Mo is suitable for working in high temperature environments due to its excellent heat resistance.

7) 10CrMo910 is a high-grade stainless steel with extremely high strength and corrosion resistance. It is especially suitable for use in harsh high-temperature and high-pressure environments, such as high-pressure steam generators and other key parts.

Chinese standard high-pressure boiler tube vs American standard high-pressure boiler tube:

Different meanings and uses:
National standard high-pressure boiler tubes mainly follow China's national standards and are used to meet specific domestic industrial needs, such as boilers, power stations, chemical industries, pipeline transportation projects, etc. ‌These pipes are commonly used in the manufacture of general structural and mechanical structural components, ‌as well as building structural components and equipment for transporting fluids.

American standard high-pressure boiler tubes, which are high-pressure boiler tubes that follow American standards, are mainly used in the United States and international markets. ‌These pipeline materials are widely used in petroleum, ‌chemical industry, ‌thermal power, ‌nuclear power, ‌ships, ‌bridges, ‌fire protection, ‌water supply and drainage and other engineering projects. ‌The standards and specifications of American standard high-pressure boiler tubes are usually more international, ‌suitable for multinational engineering projects. In addition, manufacturers of American standard high-pressure boiler tubes are usually in line with international standards, providing a wider product line and better services to meet the specific needs of different countries and regions. ‌

1. Different standards
The production standard for national high-pressure boiler tubes is GB5310, and the main production standard for American high-pressure boiler tubes is ASTM A192. The two standards have different technical requirements for production materials, mechanical properties, chemical composition, test methods, etc., so the production processes of the two high-pressure boiler tubes are also quite different. The standards for high-pressure boiler steel pipes provide clear guidance for material selection, ensuring the safe operation and service life of the boiler.

2. Different materials
The American standard high-pressure boiler tube material is carbon steel, and its chemical composition contains 0.06-0.18% carbon and 0.27-0.63% manganese. In addition to carbon steel, the national standard high-pressure boiler tube materials also include Cr-Mo alloy steel, 12Cr1MoV alloy steel and other types. The different selection of materials results in certain differences in the mechanical properties and high temperature resistance of the two high-pressure boiler tubes.

3. Different production processes
American standard high-pressure boiler tubes are produced by cold drawing, cold rolling and other processes, with smooth surface and no obvious oxide layer and burrs. National standard high-pressure boiler tubes are produced by hot rolling, hot expansion or cold drawing processes, and slight oxide layers and burrs are allowed on the surface. Differences in production processes also lead to differences in the surface quality of the two high-pressure boiler tubes.

4. Different uses
American standard high-pressure boiler tubes are suitable for petrochemical, power station, boiler industry and other fields. The diameter range is usually 6mm-610mm, and the wall thickness range is 1mm-50mm. National standard high-pressure boiler pipes are also suitable for the above fields, and the range of pipe diameters and wall thicknesses is larger.

To sum up, there are big differences between American standard high-pressure boiler tubes and national standard high-pressure boiler tubes. Comparative analysis from the aspects of production standards, materials, processes and uses can help readers better understand the characteristics of the two high-pressure boiler tubes. the difference.

Read more: What is the difference between seamless tubes and ordinary steel tubes? or Schedule 40 pipe