Why do we need a large pipe?

Modern industry produces pipes of various diameters, which are used in different spheres. Metal rolling of small and medium diameter are used in the homes of most cities. A product of large diameter is most often used in utilities and trunk oil and gas pipelines. The choice of a pipe of a particular diameter depends both on the objectives of the pipeline, and on its length and operating conditions.

Kinds

At present, steel pipes of large diameter are divided according to the method of their production. There are single-seam, which are made of steel sheet by means of contact welding. They have a diameter of 114 to 530 mm.

The second type of pipe is called spiral. They are made of metal by means of electric arc welding. The name gives an idea of how the seam is located, thanks to which the final product is obtained. The diameter of such products varies in the range of 159-820 mm.

The third type includes the largest - with a diameter of 530 to 1420 mm. They are manufactured by industry with one longitudinal straight seam, which is done by electric arc welding.

Also, in industrial production, edge processing can be performed - trimming and deburring. In this case, pipes can be produced without edge processing.

Application

The use of these or other materials is laid at the stage of designing various objects. So when building main pipelines for hydrocarbon raw materials, try to use large diameter pipes. A pipe of 1,420 mm makes it possible to create the required patency of raw materials in such a pipeline, and, consequently, the mining organization will not let its buyer down. Similar indicators are expected by the designers and from pipes of smaller diameter - 900, 920 or 1020 mm.

In settlements, in the construction of pipelines for the transport of raw materials, a 920 or 1200 mm pipe is better suited. This is due to the fact that such pipes are more compact and do not stand out strongly against the backdrop of the city landscape (with an external pipeline), and with an underground method of laying, a lower pit is needed (hence, less labor is needed to tear and pile excavations).

Also in settlements steel pipe 920x12 or 1000 mm can be used in utilities (water supply, sewerage). For example, about the replacement of 920x12 steel pipes with cast iron pipes is well written here http://steel-snab.ru.

Plus, even after deducting expenses for digging, filling excavations, labor costs for workers, design work, still more. Their cost is lower than that of cast-iron ones. But the service life of steel pipes is lower than that of cast iron counterparts. But steel is stronger than cast-iron ones - they are not afraid of blows, and consequently, are less damaged during transportation and handling. Another advantage of steel products in front of cast-iron in the housing and communal services system is a great resistance to the influence of aggressive environments.