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Profiled Tube

The profiled seamless steel pipe is a general term for seamless steel pipes of other cross-sectional shapes other than round pipes.

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The profiled seamless steel pipe is a general term for seamless steel pipes of other cross-sectional shapes other than round pipes. According to the shape and size of the cross-section of the steel pipe, it can be divided into the same wall thickness profiled seamless steel pipe (code D), the unequal wall thickness profiled seamless steel pipe (code BD), and the variable diameter profiled seamless steel pipe (code BJ).

Shaped seamless steel tubes are widely used in a variety of structural parts, tools and mechanical parts. Compared with the round pipe, the special-shaped pipe generally has a large moment of inertia and a section modulus, and has a large bending and torsion resistance, which can greatly reduce the structural weight and save steel.

The development of shaped tubes is mainly the development of product varieties, including sectional shape, material and performance. Extrusion, oblique die rolling and cold drawing are effective methods for producing shaped tubes. They are suitable for the production of shaped pipes of various sections and materials. In order to be able to produce a wide variety of shaped tubes, it is necessary to have a variety of means of production. In the 1990s, on the basis of the original cold drawing, China developed dozens of production methods such as roll drawing, extrusion, hydraulic, rotary rolling, spinning, continuous rolling, rotary forging and no-drawing. Continuously improve and create new equipment and processes.

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