51 Detailed explanation of seamless steel pipe network Seamless pipe and seamless steel pipe difference Seamless pipe is a long steel bar with a hollow section and no joints around. The steel pipe has a hollow cross-section and is used in a large amount as a pipe for conveying fluids, such as pipes for transporting petroleum, natural gas, coal gas, water, and certain solid materials. Compared with solid steel such as round steel, seamless pipes are lighter in terms of bending strength and torsional strength, and are economical section steels. They are widely used in the manufacture of structural parts and mechanical parts such as oil drill pipes and automobile transmission shafts. , bicycle racks, and steel scaffolds used in construction. The use of seamless tubes to make ring-shaped parts can improve material utilization, simplify manufacturing processes, save materials and processing man-hours, such as rolling bearing rings, jack sleeves, etc., which are now widely used in steel pipes. The seamless pipe is also an indispensable material for various conventional weapons. The barrels, barrels, etc. must be made of steel pipes. Steel tubes can be divided into round tubes and shaped tubes according to the shape of the cross-sectional area. Since the circle area is the largest under the condition of the same circumference, more fluid can be transported by the circular tube. In addition, when the ring section is subjected to internal or external radial pressure, the force is relatively uniform. Therefore, the vast majority of seamless pipes are round pipes and are divided into hot-rolling and cold-rolling. Seamless steel tubes and seamless steel tubes are steel tubes that do not see seams on the surface, and are generally used for frame construction. Pipes for fluid transport and seamless steel tubes are easy to sterilize.