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. They are an economical section steel, widely employed in the manufacture of structural components and mechanical parts, including oil drilling pipes, automotive drive shafts, bicycle frames, and steel scaffolding for construction. The production of circular components from steel tubes, such as roller bearing shells and jack sleeves, enhances material utilization, simplifies manufacturing processes, and saves materials and processing time. Shandong Liaocheng is known as the "Capital of Seamless Steel Tubes," with Liaocheng Seamless Steel Tube Factory producing large-diameter seamless steel tubes. Common material grades include 10#, 20#, 35#, 45#, 16Mn, 27SiMn, 40Cr, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo, and 45Mn2.