High-pressure boiler seamless pipe is a kind of Boiler Tube. It belongs to the category of seamless steel tubes. The method of manufacturing the same and seamless, but the manufacture of steel pipe used, there are strict requirements.
Often in high temperature and high pressure conditions, the use of high-pressure seamless tube under the effect of high temperature flue gas and water vapor, oxidation and corrosion will occur. Requirements durable steel with high strength, high resistance to oxidation corrosion, and have good organizational stability. High-pressure boiler tube is mainly used to manufacture high pressure and ultra-high pressure boiler superheater tubes, reheater tubes, windpipe, the main steam pipe.
Low-pressure boiler pipe GB3087-1999, GB5310-1995 high-pressure seamless pipe is used in the manufacture of various structural low and high-pressure boiler superheated steam pipes, boiling water pipes and superheated steam locomotive boiler tubes, opium pipe, small pipe and brick arch effective high-quality carbon structural steel hot-rolled and cold drawn (rolled) seamless steel pipe. Structural seamless steel pipe (GB / T8162-1999) seamless steel pipe for general structure and mechanical structure.
Shaped seamless steel pipe is in addition to other general term seamless pipe cross-sectional shape. Press the pipe cross-section can be divided into different shapes and sizes and so shaped seamless steel pipe wall thickness (code D), ranging shaped seamless steel pipe wall thickness (code-named BD), variable diameter shaped seamless steel pipe (code-named BJ). Shaped seamless steel tubes are widely used in various structural parts, tools and machinery parts. And the tube compared Pipes generally have a greater moment of inertia and section modulus, flexural torsional greater capacity, can greatly reduce the structural weight, saving steel.