Hexagonal steel pipe
is also called special-shaped steel pipe, including octagonal pipe, rhombic pipe, elliptical pipe and other shapes. Hexagonal steel pipe
is an economic section steel pipe, including non-circular cross-section outline, equal wall thickness, variable wall thickness, along the length direction, variable diameter and wall thickness, cross-section symmetry and asymmetry. Such as square, rectangle, cone, trapezoid, spiral, etc. Special-shaped steel pipe can better adapt to the particularity of service conditions, save metal and improve labor productivity of parts manufacturing. Hexagonal steel pipes are widely used in aviation, automobile, shipbuilding, mining machinery, agricultural machinery, construction, textile and boiler manufacturing. Cold drawing, welding, extrusion and hot rolling are the main methods to produce special-shaped pipes, among which cold drawing is widely used.
Hollow hexagonal steel is widely used in various structural parts, tools and mechanical parts. Compared with circular tubes, hexagonal pipes
generally have larger inertia moment and section modulus, and have greater flexural and torsional resistance, which can greatly reduce the weight of the structure and save steel.
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