Seamless steel tubes feature hollow cross-sections and are extensively used as pipelines for conveying fluids, such as oil, gas, water, and certain solid materials. Compared to solid steel like round bars, they are lighter in weight while maintaining the same bending and torsional strength. As an economical section steel, they are widely employed in the manufacture of structural components and mechanical parts, such as oil drilling pipes, automotive drive shafts, bicycle frames, and steel scaffolding for construction. Manufacturing circular parts from steel tubes enhances material utilization, simplifies production processes, saves materials, and labor hours, and is now widely used for this purpose.