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Seamless Steel Tube (fluid tube) is a type with a hollow cross section and no weld from head to tail.
Steel Pipe has a hollow cross section, a large number of used for conveying
Fluid Pipe conveying oil, natural gas, gas, water and some solid materials pipeline. Compared with solid steel such as
Round Steel, steel pipe has the same bending and torsional strength and light weight. It is a kind of economic cross-section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile drive shaft, bicycle frame and steel scaffolding used in construction, etc. Making ring parts with steel pipe can improve the material utilization rate, simplify the manufacturing process, save the material and processing time, such as rolling bearing rings, jack covers, etc., have been widely used in steel pipe manufacturing. Steel pipe is also an indispensable material for all kinds of conventional weapons. Gun barrel and barrel are made of steel pipe. Steel pipe can be divided into round pipe and special pipe according to the different shape of cross-sectional area. Since a circle has the largest area when the circumference is equal, more fluid can be transported with a circular tube. In addition, the annular section is subjected to the internal or external radial pressure, the force is relatively uniform, therefore, the vast majority of steel tubes are round tubes.
