For this purpose, when creating critical systems, it's also advisable to use the most reliable materials available from suppliers. These rightfully include round cold-rolled steel pipe, which has a number of significant advantages over cheaper analogues.
The most important ones for practice include the following:
The seamless wall offers significantly greater strength than similar products with a technological seam, allowing the product to be used at elevated pressures, significantly increasing the throughput of the transport system and its efficiency. It's also worth noting that the material lends itself very well to arc welding, which requires the simplest equipment, including equipment that cannot convert alternating current or create a protective atmosphere over the molten metal from inert gases. This ensures high reliability for circumferential welds that connect the ends, which are subject to less stress, compared to longitudinal welds that clamp the edges into a cylinder, which resist tangential forces.
Like any structural steel, the raw material used to manufacture these products has high mechanical strength, which prevents excessive deformation under tension. This not only preserves the integrity of the sample, but also its inherent geometric dimensions.
Good bending resistance allows the structure to maintain its original shape even under significant transverse forces. This reduces the need for supporting elements, significantly reducing overall project costs.
Thanks to the wide range of products from domestic manufacturers, the list of round cold-rolled steel pipes includes options suitable for both building new main pipelines and servicing all types of industrial equipment. A knowledgeable engineer can easily select the most suitable option for a specific task from the catalog.
Analogues of round cold-rolled steel pipes
The closest analogue to the described product in terms of cost and technical capabilities is round hot-rolled steel pipe, produced in metallurgical plants using similar manufacturing methods. The only difference is the preheating of the feedstock before the deformation process to increase its ductility. This prevents the grains that make up the metal structure from becoming elongated, and the crystal lattice becomes more isotropic, which in some cases has its advantages. The only significant drawback is the formation of scale on the surface, which makes it uneven and degrades the quality of the thread being cut. Therefore, for installation using couplings, it is better to choose cold-rolled ferrous rolled metal. Two other similar products are worth considering separately.
Electric-welded steel pipe
Cheaper electric-welded steel pipe Although it does not have the strength of seamless ones, for work in lightly loaded modes it is preferable for reasons of economic feasibility, since it allows for satisfactory results to be achieved at lower financial costs.
Profile steel pipe
Square or rectangular in cross section profile steel pipe It is manufactured using the same technology as round electric-welded sheet metal: bending a narrow strip of sheet metal to the desired geometric shape and then welding the aligned side edges. Its high bending resistance and, in particular, the presence of two pairs of parallel edges make this material highly sought after for the creation of various metal structures and products. This is due to the ability to join elements tightly during assembly, as well as the ability to securely attach the sheet metal sheathing directly to the frame by screwing screws into pre-drilled holes with a drill or screwdriver.