Pipeline transport systems, varying in capacity and purpose, are present in virtually every area of modern economic activity. They are found in residential buildings, public buildings, and industrial plant workshops, not to mention the vast expanses of forests and fields located between mineral deposits and processing plants. Even fully autonomous self-propelled transport cannot operate without their participation in the overall scheme for reliable and uninterrupted operation. The total length of relatively short connecting sections and long routes is measured in tens, and by some estimates, hundreds of thousands of kilometers, so there is a steady market demand for various materials for their construction, maintenance, and repair. Among the products of ferrous metallurgy enterprises, [the term "pipeline" is used interchangeably with other materials and is used interchangeably with other materials and is used interchangeably with other materials and systems round cold-rolled steel pipe, since it is this type of rolled metal that satisfies all the basic requirements when solving rather complex problems.
What advantages does a round cold-rolled steel pipe have over its analogues?
Among the main advantages of a round cold-rolled steel pipe, the following are particularly worthy of attention:
- Structural steel products are significantly cheaper than non-ferrous rolled metal or stainless steel alloyed with expensive additives during the smelting process. It is for these economic reasons that they are often the final choice, despite their vulnerability to electrochemical corrosion, which gradually destroys the metal layer by layer over long periods of use, turning it into loose, crumbling rust.
- The mechanical strength of steel is unquestionable, but the internal pressure generated by pressure pumps is also aimed at maximizing the performance and efficiency of the transport system. In such cases, the absence of welds in the seamless wall becomes crucial, as the homogeneous metal better resists tensile deformation in all directions, making it much more difficult to tear.
- Another advantage of using structural steel as a feedstock for production is its pliability during assembly using simple arc welding equipment. The process requires no special current modes to stabilize the arc, no electrodes with expensive coatings, and no cumbersome gas cylinder equipment to protect the molten weld pool from oxidation by atmospheric oxygen by displacing it with inert gases.
It has the same features round hot-rolled steel pipe, which utilizes a technological method of deforming the raw material into finished products in a hot, rather than cold, state. This results in a stress-free internal structure of the crystal lattice, which in some cases proves to be a very useful property. The only drawback is the formation of scale on the surface during cooling.
Round electric-welded steel pipe
Obtained from a sheet metal strip by bending it into a cylindrical shape with subsequent welding of the matching longitudinal edges in automatic mode round electric-welded steel pipe It has a seam running parallel to the central axis along its entire length. Under significant tangential force from the pumped product, this seam becomes the weakest point, and when the pressure reaches a critical point, rupture occurs precisely at this point. On the other hand, this production technology is less energy-intensive, so the finished product is somewhat less expensive and is preferred for the construction of pipelines that are not subject to heavy loads.
Profiled electric-welded steel pipe
Sometimes the density of laying several routes in openings of limited cross-section becomes important and to increase the window overlap coefficient, a welded steel profile pipe Square or rectangular in shape. It is also widely used as a structural material in the assembly of various metal structures, as its hollow nature, while maintaining sufficient strength, allows for a significant reduction in overall weight without compromising reliability, thereby significantly reducing the loads created by its own weight.