Metal round pipe - everything related to this type of
Metal pipes are used for a wide range of tasks and are used for transporting liquid, gaseous and other substances. The range of this group of products is very large, and to understand it, you need to know the basic requirements of regulatory documentation. Compliance with all parameters is very important, it guarantees the reliability and durability of products.
Product classification
It should be immediately noted that due to the large number of varieties of the product type in question, there are a number of GOST standards, which list does not make sense, it is necessary to select the necessary regulatory act in each specific case.
The range of round steel pipes according to GOST provides for a number of important indicators, consider the most significant of them.
The classification reflects a number of important parameters:
- Brand of steel from which products are made.
- The method of rolling blanks in the production process.
- A method of manufacturing products.
- The shape of the finished elements (round, square, rectangular, and so on).
Electric welded pipes
This group is designated by the abbreviation ESP and has several varieties:
| ESP pipe | It is made by molding with the subsequent welding of elements using electric welding. Most often, an electrowelded metal pipe is made by welding straight joints strictly along the axis of the product or parallel to this line. |
| Cold-welded straight pipe ESP | The difference of this option is that it is made by the method of cold deformation of pre-welded from sheets or strips of blanks. Thanks to this technology, products acquire additional properties. |
| Longitudinal hot-deformation pipe | This option is very similar to the above, the technology is the same in terms of preparation and welding of the workpieces, but it differs in that the production process takes place with the heating of the metal. |
| Spiral seam pipe | This option is made much less often due to the rather complex production process, since the strips are formed in a spiral, while simultaneously with this process welding is performed, and the seam must be continuous along the entire length of the product. |
Seamless tubes
This product group has the designation BS and is distinguished by several factors:
| BSH pipe | Most often produced from steel billets by hot rolling or other methods (drawing, forging, the use of special presses). Due to the fact that there is no seam joint, the products are much stronger and more resistant to internal pressure, which in some systems can reach dozens of atmospheres. |
| Hot rolled products | This option is made on special equipment at very high temperatures, thanks to which the finished products are very durable and are able to withstand even very large loads, both outside and inside |
| Cold formed pipes | This option is different in that the production process takes place without heating the blanks on special equipment, a very common option, since its price is democratic, and the quality is quite high |
Variants of materials used
Products differ not only in production method, but also in production, there is a huge variety of options, but the most common are the following:
- Products made of carbon steel are the most common due to several factors: low price, good strength and durability (with appropriate processing) and the ability to do it yourself.. Elements can be welded or threaded and connected using special pipe fittings. If you need to calculate the weight of the steel round pipe, then the calculation method is better to learn from the experts.
Tip! When buying products, special attention should be paid to the state of the surface: there should not be numerous corrosion and brown deposits on it.
- The round stainless pipe is characterized by high resistance to aggressive actions and a very long service life; therefore, it is widely used in facilities where reliability and durability are very important.. At a number of enterprises in the food and chemical industry, the industry instruction prescribes the use of stainless pipelines.
- Round aluminum pipe - according to GOST, a huge number of options are provided, which differ in both the raw materials used and the method of production. This option is very popular due to several properties: low weight of elements, high strength and high performance characteristics. Due to these qualities, this option is indispensable where the weight of the structure is of primary importance.
Tip! Along with a number of advantages, aluminum also has limitations on use, which are always spelled out in the material passport, so be sure to read the documentation to make sure that the option you choose is suitable for certain purposes.
Whichever option you choose, it is important to use quality products. Particular attention should be paid to the connection of elements, as in these places most often and problems occur during operation.
Conclusion
There are a huge number of pipes of different diameters and lengths on the market, so it is important to make the right choice so that communications function as efficiently as possible. The video in this article will help to understand some of the nuances of the topic in question even better.