Boiler pipe refers to a steel product with both ends open and having a hollow section. The length of the boiler pipe is relatively large compared to its surroundings. The production method can be divided into seamless steel pipe and welded steel pipe. The specifications of the steel pipe are external dimensions (such as outer diameter or side length) and The wall thickness indicates a wide range of sizes, from capillary tubes with very small diameters to large-diameter tubes with diameters of several meters. Steel tubes can be used in pipelines, thermal equipment, machinery industries, petroleum geology exploration, vessels, chemical industry and special applications.