New material began to be used due to the fact that the requirements of customers to pipes that are used to lay new highways are constantly growing. The new smooth -walled coating provides anti -corrosion protection of pipes, and also does not prevent gas inside the highway. The perfectly smooth inner surface of the pipe minimum reduces friction and provides increased gas pass by 10 percent. At the same time, the positive fact is that the diameter of the pipe remains the same and the pressure of the working fluid inside the pipeline does not change.
such a characteristic as roughness is a greater role on the inner surface of the pipe. For this, tests were conducted at the Volga Pipe Plant. For this, pipes with a diameter of 1220 mm with a wall with a thickness of 17.5 mm were used. The inner surface of the pipes was covered with an anti -corrosion layer, which is made of the material of the best manufacturers of these products. The test passed quite successfully, and the result was positive. In the near future, VTZ is going to undergo international certification of DNV - this is a standard for equipment that is used in the underwater laying of the highways, which will successfully produce and use the products of the plant in construction.It must be recalled that VTZ produces pipes without a seam for: trunk gas pipelines and oil pipelines, petrochemical, automobile, chemical oil and gas industries, and thermal power plants. It also produces: pipes with a spiral and straight seam of large diameters. All plant products comply with the international standards ASTM, DIN EN, API, as well as Russian standards and technical conditions. The factory has its own steeling workshop, which completely satisfies the needs of production in a steel tube workpiece. Finished products are supplied both to the Russian market and to other countries. The plant pays great attention to the quality and environmental friendliness, which is confirmed by certification of compliance with ISO 9001 and ISO 14001 - this is an international standard.
