Pipe GOST 10704-91: specifications, purpose. Electrically welded steel pipes

Electrically welded steel Pipes (GOST 10704-91) is a fairly recent phenomenon, but almost immediately took a strong position on the market. Today, these products perform a great role in the construction of objects for different purposes. These pipes are made of strip or sheet metal. In the process of production is used for forming or welding.

As a raw material acts as low alloy and carbon steel. Steel pipe passing metal, welded together using only one seam. Depending on what type of suture is used, the pipes are longitudinally welded or spirally.

Purpose

Electrically welded steel Pipes (GOST 10704-91) are used for laying gas, water pipes and the manufacture of parts of structures and heating systems. Zinc is able to prevent corrosion of the material. It eliminates the burden of maintenance and care. The use of such products allows to increase service life and improve safety, because it reduces the likelihood of leakage.

These tubes are used for piping with different characteristics flow and pressure. Welded pipe is used for pipelines which are operated at low pressure. This should include water and heat network.

Tube Length can vary from 4 to 12 m. the carbon steel Pipe used for laying of pipelines and gas pipelines, the operating pressure not exceeding 16 MPa. The basis of pipes may lie calm, fluidized or semi-killed steel.

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Specifications

In the production process of the described products used GOST 10704-91. Pipe, specifications of which will be mentioned below, can have a diameter in the range from 10 to 1420 mm. the wall thickness is 32 mm and the minimum parameter is 1 mm. the Consumer can negotiate with a supplier of goods intermediate values of diameter and wall thickness.

If you purchase the product whose diameter is 57 mm or more, for example one transverse seam. But if the diameter is 820 mm or more, the longitudinal seams must be two and cross – one. Before purchasing a product, make sure that it is manufactured according to GOST 10704-91. Pipe specifications which you need to be known, can be represented by the products of random or measuring length. In the first case we are talking about the settings to 12 m, the minimum value is 2 m whereas in the second the minimum value is 5.

The Final diameter often affects the length. If the first argument is not greater than 30 mm, the length will be 2 m. the Latter value is increased to 3 m, when the diameter varies from 30 to 70 mm. If the figure is 152 mm, the pipe length may reach 4 m.

Classification of pipes

These tubes vary. Extras include:

• Resistance to mechanical impacts;
• High mechanical properties;
• Settings of hydraulic pressure.

When choosing a particular species, the ratio of these characteristics is of paramount importance. However, in any case, it is important to comply with GOST 10704-91. Pipe, specifications of which are disclosed in the article, can be divided further and the cross-sectional shape, it can be:

• Krugloi;
• Kvadratnog;
• Prjamougolny.

Differ these products are still on the welding method. In the production process may be used plasma welding or the work can be conducted using tungsten electrode. Sometimes the pipes are welded in inert gas. With current possible to obtain a high quality weld. More should be allocated and laser beam welding.

Optional application

Welded products are used today in different fields of human activity, it can be construction and industry, and tractor industry and the production of cars and steel structures. Smaller scale is the manufacture of furniture. The product will fit range and main features, if the production will be used by GOST 10704-91. Pipe the technical characteristics which should be examined before purchasing the products, is also used for the device of children's playgrounds, and fences.

Classification for physico-chemical properties

Today there are four groups, which are divided welded tubes. In group a combined those that have certain mechanical properties. But if the product belongs to the group of B, then it should have special chemical properties. The pipe will have certain chemical compositions and special mechanical properties, if you belong to the group B. When the necessary pipes that would meet the standards of the hydraulic pressure, the user selects those that represent a group G.

Unit pipe classes

For flow of gases and liquids in heating and in the construction of steel structures, and scaffolding tubes are used first class. But steel water-gas supply pipes (GOST 10704-91) belong to the second class. These products can be used in chemical pumps, oil and gas pipelines. In the nuclear, chemical and food industry uses pipes of the third class. They are resistant to pressure differentials and high temperatures.

For the intelligence neturogena used 4 class. But in the railcar industry and mechanical engineering, as well as in the manufacture of equipment that will be used in the repair and construction of field applied pipe the fifth grade. There's another class – 6. It accommodates pipes that go into the field of engineering.

Pipe Weight

If you still don't know which manufacturer to choose when buying these products, you can pay attention to OOO «Regionmetprom”. This company offers high quality pipes. You can purchase water and gas products, profile pipes, round welded and galvanized products. Before purchasing, you must know the main features, among them – the weight. It will depend on the diameter. If he is 10 mm, the wall thickness can be equal to 1 and 1.2 mm. With one meter of pipe will weigh 0,222 kg. by Purchasing a 12-meter pipe, you will receive the product with a wall thickness of 1 mm. At 1 m will weigh 0,271 kg.

The weight of the pipes (GOST 10704-91) with the gasket at times is of great importance. For a 14-metre pipes with a wall thickness of 1 mm it is necessary to take into account the weight of one m, which is equal 0,321 kg When the diameter is increased to 20 mm, the wall thickness becomes equal to 1.2 mm, with one meter of the product weighs already 0,556 kg.

Another manufacturer, and value for its products

For the consumer one of the important factors when choosing a is usually the cost. If you can see water and gas steel pipes (GOST 10704-91), then pay for one of them will have 46 rubles. per square meter. In this case we are talking about the product with parameters 15 x 2.8 mm, with a weight of 1 meter is equal to 1.28 kg. per ton And the consumer will pay 36, 000.

When resized to 20 x 2.8 mm, the weight becomes equal to 1.66 kg. This is true for one meter of the product. Buy it you can 59,76 RUB, the Price per ton remains the same. Pipes (GOST 10704-91) manufacturer «Metal-SERVIS NN,” offers to buy. Products from this supplier presents a wide range. If you buy water-gas supply pipe size equal to 50 x 3.5, then pay for the meter will have 161 RUB Weight 1 meter in this case would amount to 4.88 kg.

Conclusion

Pipe GOST 10704-91, the diameters of which were mentioned above, is a product with a wide field of use. It can be used in a variety of structures and pipelines that transporterowych any environment. These pipes can be seen on the arms of some industries.