Seamless pipe is a long steel with a hollow cross section and no seams around it. The steel pipe has a hollow cross section and is widely used as a pipeline for transporting fluids, such as a pipeline for transporting oil, natural gas, gas, water, and certain solid materials. Compared with solid steel such as round steel, steel pipe is lighter in weight when it has the same bending and torsional strength. It is an economical cross-section steel. It is widely used in the manufacture of structural parts and mechanical parts, such as petroleum drill rods, automobile transmission shafts, and bicycles. And steel scaffolding used in building construction. The use of steel pipes to manufacture annular parts can improve the utilization of materials, simplify the manufacturing process, save materials and processing hours, such as rolling bearing rings, jack sleeves, etc. At present, steel pipes have been widely used for manufacturing. Steel pipe is also an indispensable material for various conventional weapons. Pipes, gun barrels, etc. must be made of steel pipes. Steel tubes can be divided into round tubes and special-shaped tubes according to the different cross-sectional area shapes. Since the circular area is the largest under the condition of equal perimeter, more fluid can be transported by the circular tube. In addition, when the cross section of the ring is subjected to internal or external radial pressure, the force is more uniform. Therefore, most steel pipes are round pipes.
However, round pipes also have certain limitations. For example, under the condition of being bent in a plane, round pipes are not as strong as square or rectangular pipes. Some agricultural machinery skeletons, steel-wood furniture, etc. are often used in square and rectangular pipes. According to different uses, special-shaped steel pipes with other cross-sectional shapes are also required.
Post time: Dec-18-2019