High pressure boiler tube is a kind of boiler tube, belongs to the seamless steel tube category. The manufacturing method is the same as seamless pipe, but there are strict requirements on the type of steel used to manufacture steel pipe. High-pressure boiler pipe is often used in high temperature and high pressure conditions, the pipe in high temperature flue gas and water vapor, oxidation and corrosion. The steel pipe is required to have high durable strength, high oxidation corrosion resistance and good microstructure stability. High pressure boiler tube is mainly used to manufacture superheater tube, reheater tube, conduit pipe, main steam pipe and so on of high pressure and ultra high pressure boiler.