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What is the Fluid Tube?

The fluid tube is a steel tube with a hollow section, from head to tail, without welds. It is specifically used to transport pipes with fluid properties. In the medium with fluid properties, in addition to liquid media such as water, oil, and solution, solid media such as cement, grain, and coal powder can flow under certain conditions. It can be made of steel, or it can be made of non- ferrous materials such as copper and titanium, or even made of non-metallic materials such as plastic.

The fluid tube must have a hollow 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 use round tubes.

Because of its low cost and high strength, steel pipes are widely used in fluid transportation in modern society. According to its production process, steel pipes are divided into two categories: seamless steel pipes and welded pipes. The welded pipes are divided into high-frequency straight seam welded pipes (ERW), spiral welded pipes (SSAW) and submerged arc welded pipes (UOE). In the past, fluid pipes have traditionally used seamless steel pipes. With the development of materials 
science, molding processes, and unit equipment, welded pipes have been greatly developed. The welded pipe has the advantages of better uniformity than the seamless pipe wall, high precision, low energy consumption and high production efficiency. The oil and gas pipeline (API standard), which requires high requirements, has been used almost 100% in the past. More than 95% of developed countries in Japan and Europe have been replaced by welded pipes.

The 8163 fluid pipe is a seamless steel pipe for fluid transportation (GB/T8163-2008) and is a general 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 a hollow section and is used as a pipe for conveying fluid, such as oil, natural gas, gas, water, and some solid materials. Compared with solid steel such as round steel, the steel pipe is lighter in weight when it has the same bending and torsional strength. It is an economical section steel and is widely 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 use of steel pipes to manufacture ring-shaped parts can improve material utilization, simplify 
manufacturing 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 indispensable materials 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 equal circumference, more fluid can be transported by the circular tube. In addition, the circular section 
is 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 the welded pipe is used as a conveying fluid pipe, it has different requirements from ordinary steel pipes:
1. The weld is not allowed to leak. For welded pipes requiring APIs, it is also required to perform ultrasonic testing and hydrostatic testing on the welds of each welded pipe;
2. For the transportation of corrosive chemical solutionsFind Article, all steel pipes must be treated with anti-corrosion treatment of the inner wall;
3. Fluid tubes need to remove internal burrs to reduce fluid transport resistance.

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