The Importance and Strict Requirements of High Pressure Boiler Tubes

2025-09-08 10:33:56

Once the high-pressure boiler tube fails, it may lead to catastrophic boiler explosion accidents, causing huge losses of life and property as well as shutdown losses. Therefore, it must meet the following extreme requirements:

Excellent high-temperature durability and creep strength: In long-term high-temperature environments, materials must have extremely strong resistance to slow plastic deformation (creep) and fracture.

Good high-temperature oxidation resistance and corrosion resistance: able to resist oxidation and corrosion of high-temperature steam, flue gas, and ash.

Excellent organizational stability: Under long-term high temperature and high pressure, the metallographic structure (such as pearlite, bainite, martensite) needs to remain stable without significant deterioration.

High toughness and excellent processability: including good cold and hot processing performance (such as bending pipes, expanding ports) and welding performance, making it easy to manufacture and install.

Extremely high dimensional accuracy and surface quality: ensuring welding quality and reducing stress concentration caused by uneven wall thickness.

Main application areas

Thermal power plants are essential materials for modern supercritical and ultra supercritical coal-fired power generation units.

Nuclear power plant: heat transfer tubes and other components used in nuclear power steam generators.

Large industrial boilers: self owned power plant boilers used in industries such as petrochemicals, metallurgy, and textiles.

Special equipment: such as high-temperature and high-pressure heat exchanger pipelines in the petrochemical industry.