Inner four-corner shaped tube
The inner four-corner shaped pipe is a seamless steel pipe made by cold drawing. Special-shaped pipes are generally distinguished according to the broken section, and according to the material, they can be divided into seamless steel pipes, aluminum alloy pipes, and plastic pipes.
application:
The inner four-corner shaped pipe is widely used in various structural parts, tools and mechanical parts. Compared with round pipes, special-shaped pipes generally have larger moments of inertia and section modulus, and have greater bending and torsion resistance, which can greatly reduce structural weight and save steel.
The development of special-shaped tubes is mainly the development of product varieties, including cross-sectional shape, material and performance. Extrusion method, diagonal die rolling method and cold drawing method are effective methods for producing special-shaped pipes, which are suitable for producing special-shaped pipes of various cross-sections and materials. In order to produce a wide variety of special-shaped tubes, it is necessary to have a variety of production methods.
