20g seamless steel pipe is a kind of boiler tube, which belongs to the category of seamless steel pipe. The manufacturing method is the same as that of seamless pipes, but there are strict requirements on the steel grades used in the manufacture of steel pipes. When 20g seamless steel pipe is used, it is often under high temperature and high pressure. The pipe will be oxidized and corroded under the action of high temperature flue gas and water vapor.
The 20g seamless steel pipe is required to have high durability, high oxidation and corrosion resistance, and good organizational stability. 20g seamless steel pipes are mainly used to manufacture superheater tubes, reheater tubes, air ducts, main steam tubes, etc. for high-pressure and ultra-high-pressure boilers.
High-pressure boiler tube GB5310-2008 is a high-quality carbon structural steel hot-rolled and hot-rolled and used to manufacture superheated steam tubes, boiling water tubes for various structures of low-pressure boilers, and superheated steam tubes for locomotive boilers, large smoke tubes, small smoke tubes and arch brick tubes. Cold drawn (rolled) seamless steel tube. Structural seamless steel pipe (GB/T8162-2008) is a seamless steel pipe used for general structure and mechanical structure.
The mechanical properties of 20g seamless steel boilre pipes are important indicators to ensure the end-use performance (mechanical properties) of the steel, and it depends on the chemical composition of the steel and the heat treatment system. In the steel pipe standard, according to different application requirements, the tensile properties (tensile strength, yield strength or yield point, elongation), hardness and toughness indexes are specified, as well as high and low temperature properties required by users.
