A boiler tube, high pressure boiler tube is classified as seamless steel pipe. A method of manufacturing the same seamless, but there are strict requirements steels used in the manufacture of steel. The high-pressure boiler tubes often used in high temperature and high pressure conditions, the pipe under the action of high temperature flue gas and the water vapor, oxidation and corrosion. Steel high rupture strength, high resistance to oxidation corrosion, and good organizational stability. High pressure boiler tube is mainly used to manufacture high and ultra-high pressure boiler superheater tubes, reheater tubes, airway, the main steam pipe.