High-pressure boiler seamless steel pipe is a kind of boiler pipe, which has strict requirements on the steel type and process used to manufacture the steel pipe. High-pressure boiler pipes are often in high temperature and high pressure conditions during use. Under the action of high-temperature flue gas and water vapor, the pipes will oxidize and corrode. The steel pipes are required to have high lasting strength, high anti-oxidation and corrosion performance, and good structural stability. High-pressure boiler pipes are mainly used to manufacture superheater pipes, reheater pipes, gas guide pipes, main steam pipes, etc. for high-pressure and ultra-high-pressure boilers.
Common problems in the surface treatment and product processing of high-pressure boiler seamless steel pipes:
[1] The surface of high-pressure boiler seamless steel pipes is inconsistent: only pickling and passivation of the welds also causes uneven surface, affecting the appearance.
[2] It is difficult to remove scratches on high-pressure boiler seamless steel pipes: pickling and passivation of the whole pipe cannot remove various scratches generated during the processing, and it cannot remove impurities such as carbon steel and spatter that adhere to the stainless steel surface due to scratches and welding spatter, resulting in chemical corrosion or electrochemical corrosion and rust in the presence of corrosive media.
High pressure boiler tubes
