High-pressure boiler tubes are one type of boiler tubes and belong to the category of seamless steel tubes. The manufacturing method is the same as seamless pipe, but there are strict requirements on the steel grade used in manufacturing steel pipe. High-pressure boiler tubes are often at high temperature and high pressure when in use, and the tubes will be oxidized and corroded under the action of high-temperature flue gas and water vapor. The steel pipe is required to have high durable strength, high oxidation resistance and corrosion resistance, and good tissue stability. High-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air ducts, main steam tubes, etc. of high-pressure and ultra-high-pressure boilers.