In Ukraine, there are many branched transport networks of pipelines of various diameters for the movement of all kinds of liquid and gaseous substances from their intake sites from natural sources or manufacturing plants to consumers. Their total length is tens of thousands of kilometers and is steadily increasing year after year, as new sections are constantly being put into operation. Their construction, as well as the maintenance and repair of old ones, require materials that meet practical needs, the market demand for which has a steady growth trend. Ukrainian plants in the ferrous metallurgy industry strive to fully satisfy it, annually producing hundreds of types of rolled metal products with various properties in large tonnages, each of which is the optimal choice for solving specific problems. For example, round welded galvanized pipe Ideal for creating straight sections of central heating and water supply systems located in basements or attics of buildings.
Due to the simplicity of the technological method of production, it has the lowest price among its analogues, therefore, if the technical characteristics fully satisfy the nominal loads provided by the project during installation and operation, its use becomes economically feasible and allows you to implement the planned plans with minimal capital investment in the purchase of materials. The production of round welded galvanized pipes from molten steel takes place in several stages:
- passing through the rolling mill, the hot mass takes the form of a flat strip of a given width and thickness;
- a workpiece of the required length is separated from it and rolled into a long hollow cylinder on a bending machine;
- compatibleThe side edges are joined using automatic electric arc welding with a longitudinal sealed seam.
Since its strength is significantly lower than that of a solid-drawn wall, it turns out to be the weakest point. In addition, its orientation parallel to the central axis turns out to be disadvantageous both for bending at an angle of 90 degrees and when the pressure increases from the working medium pumped inside. Having a slightly higher cost round galvanized water and gas pipe is manufactured using a similar technology, and the difference is that the strip is rolled not in a perpendicular direction, but at a certain angle. This complicates the process somewhat, but the resulting spiral weld copes much better with both excess pressure and mechanical stresses that arise during deformation during bending and does not diverge like a straight longitudinal one. Due to this feature, this variety is widely used for installing heating and water supply system wiring, characterized by small diameters and frequent turns in the corners of buildings and when connecting to the installation site of radiators and mixers.
Other analogues of round welded galvanized pipes
At the very last stage of production, steel products are dipped in a bath of molten zinc or it is applied to the surface using sprayers. Thanks to this, not only round welded galvanized pipes, but also all their analogues receive very reliable protection against iron corrosion, since it is redirected to a more active metal, which plays an auxiliary role, due to the created galvanic element. This ensures reliability that does not weaken over the years and an impressive duration of the operational period.
Seamless galvanized pipe
For high-pressure main sections, a pipe with solid walls is more suitable seamless galvanized pipe. Since pushing steel to form a solid cylinder requires more energy, as well as the presence of waste that needs to be recycled, this type of black rolled metal is more expensive, so it is advisable to use such material only in the case of increased design requirements.
Profile galvanized pipe
Unlike round ones, galvanized profile pipe It is mainly used as a structural material for assembling various metal structures. The square or rectangular geometric shape of the cross-section allows for reliable connections of frame parts between themselves using electric arc welding, as well as for tightly fastening sheet material to them using self-tapping screws.
Suppliers have taken care to provide customers with a wide range of materials to choose from, in terms of technical parameters and dimensions, for each specific task.