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The fluid tube must have ahollow section, but it can also be square, triangular or any other shape. Some equipment is limited by conditions, and rectangular tubes must be used, but most of them useround tubes.
Because of its low cost and high strength, steel pipes are widely used in fluid transportation inmodern society. According to its production process, steel pipes are divided into two categories:seamless steel pipes and welded pipes. The welded pipes are divided intohigh-frequency straight seam welded pipes(ERW),spiral welded pipes(SSAW) and submerged arc welded pipes (UOE). In thepast, fluid pipes have traditionally used seamless steel pipes. With the development of materialsscience, molding processes, and unit equipment, welded pipes have been greatly developed. The weldedpipe has the advantages of better uniformity than the seamless pipe wall, high precision, low energyconsumption and high production efficiency. The oil and gas pipeline (API standard), which requireshigh requirements, has been used almost 100% in the past. More than 95% of developed countries inJapan and Europe have been replaced by welded pipes.
The 8163 fluid pipe is aseamless steel pipefor fluid transportation (GB/T8163-2008) and is ageneral seamless steel pipe for conveying fluids such as water, oil and gas.
The 8163 fluid tube is a hollow section with no welds from start to finish. The steel pipe has ahollow section and is used as a pipe for conveying fluid, such as oil, natural gas, gas, water, andsome solid materials. Compared with solid steel such as round steel, the steel pipe is lighter inweight when it has the same bending and torsional strength. It is an economical section steel and iswidely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes,automobile transmission shafts, bicycles. Shelf and steel scaffolding used in construction. The useof steel pipes to manufacture ring-shaped parts can improve material utilization, simplifymanufacturing processes, save materials and processing man-hours, such as rolling bearing rings,jack sleeves, etc., and have been widely used in steel pipes. Steel pipes are also indispensablematerials for various conventional weapons, and barrels, barrels, etc. are all made of steel pipes.Steel pipes can be divided into round pipes and shaped pipes according to the shape of the cross-sectional area. Since the area of the circle is the largest under the condition of equalcircumference, more fluid can be transported by the circular tube. In addition, the circular sectionis subjected to a relatively uniform force when subjected to internal or external radial pressure,and therefore, most of the steel pipes are round pipes.
Expanding information:When thewelded pipeis used as a conveying fluid pipe, it has different requirements from ordinarysteel pipes:1. The weld is not allowed to leak. For welded pipes requiring APIs, it is also required to performultrasonic testing and hydrostatic testing on the welds of each welded pipe;2. For the transportation of corrosive chemical solutions, all steel pipes must be treated withanti-corrosion treatment of the inner wall;3. Fluid tubes need to remove internal burrs to reduce fluid transport resistance.