Compared to round steel pipes, the primary advantages of special-shaped steel pipes (such as square and rectangular tubes) can be summarized in three points:

Superior bending strength and material efficiency: With the same material input, their cross-sectional shapes provide higher bending strength. This makes them sturdier and less prone to deformation when used as beams or frames, or allows for lighter construction.

Easier connections and enhanced stability: Their flat surfaces facilitate welding and bolting, resulting in stronger joints and simpler installation.

High space utilization and clean appearance: They can be arranged flush against surfaces, saving space, while their clean lines align with modern aesthetics.

Core selection principle: Use special-shaped tubes for structures and frameworks; use round tubes for fluid conveyance and internal pressure applications.

Special-shaped seamless steel pipes refer collectively to seamless steel pipes with cross-sectional shapes other than circular. These pipes are widely used in various structural components, tools, and mechanical parts. Compared to circular pipes, special-shaped pipes generally possess larger moment of inertia and section modulus, offering greater resistance to bending and torsion. They better accommodate the specific demands of usage conditions, significantly reducing structural weight, conserving steel resources, and enhancing labor productivity in component manufacturing.

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