Do you know about boiler tubes?

Boiler tube is a type of seamless tube. The manufacturing method is the same as that of seamless pipes, but there are strict requirements for the type of steel used in manufacturing steel pipes. According to the operating temperature, it is divided into two types: general boiler tubes and high-pressure boiler tubes.
The mechanical properties of boiler tubes are important indicators to ensure the final performance (mechanical properties) of steel. It depends on the chemical composition and heat treatment system of the steel. In steel pipe standards, tensile properties (tensile strength, yield strength or yield point, elongation), hardness and toughness indicators are specified according to different usage requirements, as well as high and low temperature properties required by users.
① Generally, the operating temperature of boiler tubes is below 350°C. Chinese domestic tubes are mainly made of No. 10 and No. 20 carbon steel hot-rolled tubes or cold-drawn tubes.
② High-pressure boiler tubes are often exposed to high temperature and high pressure conditions when used. Under the action of high-temperature flue gas and water vapor, the tubes will oxidize and corrode. Steel pipes are required to have high lasting strength, high resistance to oxidation and corrosion, and good structural stability.
The performance of boiler tubes determines the use of boiler tubes
①General boiler tubes are mainly used to make water wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke tubes and arch brick tubes, etc.
② High-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, main steam pipes, etc. for high-pressure and ultra-high-pressure boilers. The supply and demand trend in the high-pressure boiler tube industry is generally stable, but the supply and demand situation in each specific sub-industry will further diverge. Industry insiders pointed out that the most critical link is the use and promotion of new energy-saving and insulated 20g high-pressure boiler tube equipment. New energy-saving 20g high-pressure boiler tube products are gradually increasing in the market, such as green and environmentally friendly coatings, energy-saving and water-saving sanitary products, environmentally friendly stone, environmentally friendly exterior cement foam insulation boards, etc. Energy-saving and environmentally friendly products have a broad market in the 20g high-pressure boiler tube industry. The medium-term prospects are promising.