Pipes steel electrowelded, straight-seated (GOST10704-91) appeared quite recently, but almost immediately took a strong position in the market. Today, these products play an important role in the construction of objects for different purposes. These pipes are made of strips or sheet metal. In the production process, molding or electric welding is used.
The raw material is low-alloyed andcarbon steel. Steel pipes, passing through metal, are welded with just one seam. Depending on what type of joint is used, the pipes are straight or spiral.
Pipes steel electrowelded, straight-seated (GOST10704-91) are used for laying gas, water pipes and making parts of structures and heating systems. Galvanizing can prevent corrosion of the material. It eliminates the care of maintenance and care. The use of such products allows to increase the operational period and increase safety, as this reduces the probability of leakage failure.
Such pipes are used for the devicepipelines with different flow and pressure parameters. Electrowelded pipe is also used for the construction of gas pipelines, which are operated at low pressure. This includes water and heating networks.
The length of the pipe can vary from 4 to12 m. Pipes made of carbon steel are used for laying pipelines and gas pipelines, the working pressure of which does not exceed 16 MPa. At the base of the pipes can lie a calm, boiling or semi-cool steel.
In the process of production of the products describedis used in accordance with GOST 10704-91. Pipes, the technical characteristics of which will be mentioned below, can have a diameter in the range from 10 to 1420 mm. In this case, the wall thickness reaches 32 mm, and the minimum parameter is 1 mm. The consumer can agree with the supplier of the goods the intermediate values of the diameter and wall thickness.
If you buy products whose diameter isis 57 mm or more, then we allow one transverse seam. But if the diameter reaches 820 mm and more, the longitudinal joints should be two, and the transverse one - one. Before purchasing the product, you should make sure that it was manufactured in accordance with GOST 10704-91. The pipe, the technical characteristics of which you need to be aware of, can be represented by products of an immense or dimensional length. In the first case we are talking about parameters up to 12 m, the minimum value is 2 m. Whereas in the second the minimum value is 5 m.
The final diameter often affects the length.If the first parameter is not more than 30 mm, the length is 2 m. The last value increases to 3 m, when the diameter varies from 30 to 70 mm. If this figure reaches 152 mm, then the length of the pipe can be 4 m.
The pipes described in the article differ in their characteristics. Among others it should be noted:
When choosing a particular variety, the relationthese characteristics is of great importance. However, in any case it is important that GOST 10704-91 is observed. The pipe, the technical characteristics of which are disclosed in the article, can also be subdivided according to the shape of the section, it can be:
Such products differ also by a way of welding.In the production process, plasma welding can be used or the work can be carried out using a tungsten electrode. Sometimes the pipes are welded in an inert gas environment. With the help of current, it is possible to obtain a high-quality weld. Laser and beam welding should also be distinguished.
Electrolytes are used today indifferent areas of human activity, it can be construction and industry, as well as the tractor industry and the production of automobiles and metal structures. A smaller scale is the manufacture of furniture. The product will correspond to the assortment and the main features if GOST 10704-91 is used in its production. The pipe, the technical characteristics of which should be studied before the purchase of products, is also used for the installation of playgrounds, as well as fencing.
To date, four groups are known,which share electrically welded pipes. Group A includes those that have certain mechanical properties. But if the product belongs to group B, then it must have special chemical properties. Pipes will have certain chemical compositions and special mechanical properties, if they belong to group B. When pipes are required that correspond to the norms of hydraulic pressure, the consumer chooses those that represent the group G.
For the supply of gases and liquids in the field of heatingand in the construction of metal structures, as well as scaffolding, first-class pipes are used. But steel water and gas pipes (GOST 10704-91) belong to the second class. The same products can be used in chemical pumps, oil pipelines and gas pipelines. The pipes of the third class are used in the nuclear, chemical and food industries. They are resistant to pressure drops and high temperatures.
For exploration of petroleum use products 4class. But in the car building and engineering, as well as in the manufacture of equipment that will be used in the repair and construction area, pipes of the fifth class are used. There is another class - 6. It accommodates pipes that go into the field of engineering.
If you still do not know which manufacturerchoose when buying the products described in the article, you can pay attention to LLC "Regionmetprom". This company offers high quality pipes. You can purchase water and gas products, profile pipes, round welded and galvanized products. Before acquiring it is necessary to familiarize with the main characteristics, among them - weight. It will depend on the diameter. If it is 10 mm, the wall thickness may be 1 and 1.2 mm. At the same time, one meter of the pipe will weigh 0.222 kg. By purchasing a 12-meter pipe, you will receive products with a wall thickness within 1 mm. In this case, 1 m will weigh 0.271 kg.
The weight of the pipe (GOST 10704-91) when laying at timesis of great importance. For a 14-meter pipe with a wall thickness of 1 mm, it is worth taking into account the weight of one m, which is 0.321 kg. When the diameter increases to 20 mm, the wall thickness becomes 1.2 mm, with one meter of the product weighing 0.556 kg.
For the consumer, one of the important factorsthe choice is usually the cost. If before you the pipes are steel water and gas (GOST 10704-91), then you will have to pay 46 rubles for one of them. per square meter. In this case we are talking about the product with the parameters of 15 x 2.8 mm, while the weight of 1 meter will be equal to 1.28 kg. And for a ton the consumer will pay 36,000 rubles.
When the dimensions change to 20 x 2.8 mm, the weightbecomes equal to 1.66 kg. This is true for one meter of the product. You can buy it for 59.76 rubles. Price per tonne remains the same. Pipes (GOST 10704-91) producer "Metal Service NN" offers to purchase. Products from this supplier is presented in a wide range. If you buy a water and gas pipe with dimensions equal to 50 x 3.5, then you will have to pay 161 rubles for a meter. Weight of 1 meter at the same time will be 4.88 kg.
Pipe GOST 10704-91, the diameters of which werementioned above, is a product with a wide range of uses. It can be used in various designs and in laying pipelines that transport any medium. Such pipes can be seen in the arsenal of certain types of industry.
