Seamless steel pipes for high-pressure boilers are a type of boiler pipes, which have strict requirements on the steel types and processes used to manufacture steel pipes. High-pressure boiler tubes are often under high temperature and high pressure conditions when used, and the tubes will be oxidized and corroded under the action of high-temperature flue gas and water vapor. Steel pipes are required to have high durable strength, high resistance to oxidation and corrosion, and good structural stability. High-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, gas guide tubes, main steam tubes, etc. of high-pressure and ultra-high pressure boilers.

Seamless steel pipes for high pressure boilers:Implementation standard GB/T5310-2018
Material: 20G.20Mng 15MoG 15CrMoG 12Cr2MoG 12Cr1MoV
Seamless steel pipes for low and medium pressure boilers (GB3087-2018) are used to manufacture superheated steam pipes, boiling water pipes for low and medium pressure boilers of various structures, superheated steam pipes for locomotive boilers, large smoke pipes, small smoke pipes and arch brick pipes. High-quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipes.

Heating surface tubes for low and medium pressure boilers (working pressure generally not greater than 5.88Mpa, working temperature below 450°C); for high-pressure boilers (working pressure generally above 9.8Mpa, working temperature between 450°C and 650°C) ) heating surface pipes, economizers, superheaters, reheaters, petrochemical industry pipes, etc.

Seamless tubes for low and medium pressure boilers
Main material: 10#, 20#