The boiler tube is a kind of seamless tube. The manufacturing method is the same as that of the seamless pipe, but it has strict requirements for the steel used in making the steel pipe. According to the use of high and low temperature is divided into general boiler tubes and high pressure boiler tube two.
The mechanical properties of the boiler tube are important indicators to ensure the ultimate performance (mechanical properties) of the steel, depending on the chemical composition of the steel and the heat treatment system. In the steel pipe standard, according to different requirements, the tensile properties (tensile strength, yield strength or yield point, elongation) and hardness, toughness indicators, as well as the user requirements of high and low temperature performance.