Pipe vgp: technical characteristics, division into classes

08-03-2018
Pipes

Water and gas metal pipes are manufactured according to the existing GOST and are used for the construction of gas, water, heating systems and other more complex structures. Such products are characterized by certain parameters, which should be familiarized before using.

This is what we will do in this article.

VGP ordinary steel pipe

Features of water and gas pipes

In the photo of a threaded VGP tuba

The considered products can have different variations according to some parameters:

Parameter Possible options
Zinc layer
  • present;
  • missing
The presence of a threaded connection
  • made by rolled method;
  • made by a cut method;
  • missing
Manufacturing accuracy
  • ordinary;
  • increased
Wall width
  • thin;
  • very thin;
  • fat
  • extra thick
Manufacturing method
  • cold rolled without seam;
  • hot rolled without a seam;
  • welded seam
Seamless products with extra thick walls

Tip: if you plan to use such pipes in a system in contact with water, it is recommended to choose galvanized models. Their price, though higher, but they will last due to resistance to corrosive processes for much longer.

Technical details

Metal welded pipes DU 15

Let's study the technical characteristics of the VGP pipe according to GOST 3262 75:

  1. Production material - steel in accordance with GOST 1050.
Steel blanks according to the required standards
  1. The dimensions of the pipe VGP according to GOST 3262 75 in length usually range from 4 to 12 meters.

They can also be:

  • measured length;
  • multiple measured length;
  • unmeasured length.
  1. Inner diameter may vary by? up to 6 inches.
Six Inch Steel Models
  1. The outer diameter is from 10.2 to 165 millimeters.
  2. Weight per meter depends on the cross section and, accordingly, can take values ​​from 0.4 to 17.81 kilograms. According to GOST 10706 due to the strengthening of the weld, an increase in mass of 1% is allowed.
  3. Conditional pass, which is indicated in the marking of two letters DU - from 6 to 150 millimeters.

To find out the exact weight of an AIV pipe or another important parameter before purchasing it, take a look at the special table, which must be in each specialty store:

Detailed assortment containing all the technical data of the products in question

Groups

Pipes with a conditional passage of 20 mm, belonging to group B

Water and gas pipes have the following division into groups:

Group Product Features
BUT They are made from ordinary steel, for them only mechanical qualities are standardized.
B Production is possible, both from ordinary and lightly alloyed steel, for them only the chemical structure is normalized.
AT It is possible to produce both ordinary and lightly alloyed steel, for which mechanical qualities and chemical structure are standardized.
D Possible hydraulic loads are normalized.

Classes

The instruction also assumes the presence of several classes:

  • The first. Metal pipes, simple in their structure, without any special requirements. They are used in the construction of scaffolding, all kinds of supports, fences, laying of wires, installation of gas and water supply pipelines. This is the most common class for household use.
Scaffolding from VGP pipes are easy to assemble yourself
  • Second. Excellent withstand low and high pressure in the water mains, gas pipelines and oil pipelines.
Gas pipeline from the pipe VGP

Tip: if there is a significant pressure in the pipeline, it is not recommended to use products below the second class, as they may not withstand this level of operation.

  • Third. Suitable for use in the food and chemical industries, furnaces, boilers and even in nuclear equipment due to the ability to withstand pressure at high temperatures.
Third Class Piping
  • Fourth. With their help, oil fields are being developed for the subsequent implementation of its production.
Oil rig - a real test of the durability of gas pipes
  • Fifth. Structural products that form the framework of transport equipment, bridge cranes, tower masts and others that require increased reliability of objects.
Bridge crane requires high strength for each of its elements.
  • Sixth. Components such as bearings, shafts, pistons experience extraordinary loads during their operation, so when they are created, sixth grade GVP pipes are used, which are manufactured using a special technology.

Conclusion

The products under consideration are very widespread in various industrial and domestic industries. Compliance with strict standards allows high-class models to be used not only as highways for transporting liquids and gases, but also to act as structural components of engine cranes, oil rigs and other sophisticated equipment (see also the article Steel water pipes: options, pros and cons standards).

Galvanized pipe VGP in stock

The above specifications will help you navigate in their diversity. The video in this article will provide your attention to additional consideration of materials of direct relevance to the topic outlined.

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