Carbon steel seamless pipe is a hollow cross-section, with no seams around long steel. Steel tube with a hollow cross-section, for a large number of pipes conveying fluid, such as the transportation of oil, natural gas, coal gas, water, and some solid materials pipeline.

Solid steel such as steel pipes and round steel compared to the same flexural torsional strength while lighter, which is economic-section steel, is widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive transmission, bicycle frame construction using steel scaffolding. Ring with steel pipe manufacturing parts can improve material utilization and simplify the manufacturing process, saving materials and processing time, such as bearing rings, jack sets, which have been widely used to make steel.

Steel pipe or a variety of conventional weapons is an indispensable material barrel, the barrel must be steel pipe manufacturing. The steel pipe different shape of the cross-sectional area can be divided into the tube and Yixingguan. Since the equal conditions in the perimeter area of a circle with a round pipe can deliver more fluid. In addition, when subjected to internal or external radial pressure, the annular cross-sectional force is more uniform, therefore, most of the pipe is a circular tube.

Carbon steel seamless pipe is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automotive drive shafts, bicycle frames, and construction used in steel scaffolding. Ring with steel pipe manufacturing parts, can improve material utilization, simplify the manufacturing process, saving materials and processing time, such as bearing rings, jack sets, have been widely used to make steel.