Seamless steel tubes feature a hollow cross-section and are extensively used as pipelines for conveying fluids, such as oil, gas, water, and certain solid materials. Compared to solid steel products like round bars, seamless steel tubes have the same bending and torsional strength but are lighter in weight, making them an economical section steel. They are widely used in the manufacture of structural components and mechanical parts, such as oil drilling pipes, automotive drive shafts, bicycle frames, and steel scaffolding for construction. The use of steel tubes to manufacture annular parts enhances material utilization, simplifies production processes, saves materials, and reduces processing time, and this practice has been widely adopted.