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Gas pipelines and fitting buy in Almaty
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Gas pipelines and fitting

Gas pipelines and fitting

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Kazakhstan, Almaty
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Description
nbsp;The pipes PE80 for natural gas are used under pressure of 4 bars on pipelines with natural gas. Pipelines with natural gas consist of steel pipes on 20 bars, the intermediate pipeline on 4 bars and internal pipelines on 0,4 bars. Polyethylene pipes of the combined structure on sites of pressure of 20 bars began to be used for all three processes. After development of standards they will be applied more widely. Tests on the internal combined pipes which are not subject to fire influence still continue.
Polyethylene is divided into 3 groups according to their density: low, average and high density. Though durability and firmness of a pipe increases from below up, its flexibility and crash-worthiness increase in the opposite direction. Because pipes for natural gas more flexible and shockproof, than pipes with a high density, it is recommended to use them.
Pipes for natural gas have the class PE80. Value of resistance to influence of environment in pipes of average density reaches 8.0 MPas now. At increase in this level thickness of walls decreases and the amount of the liquid passed through pipes increases. As pipes have the class SDR11, when using with water they can accept pressure in the pipeline with natural gas of 4 bars; the coefficient of safety changes from 1,25 to 2,5 when using pressure of PN of 12,5 bars. As polymeric chains are influenced by structure of hydrocarbon, the high coefficient of safety is chosen.
 The possibility of production in coils provides advantage of pipes at installation. At decrease in volume of welding works it is possible to install short pipelines with a fitting and to save on labor.
Technical characteristics of a product
The pipes PE80 for natural gas are made on the mechanical block which is called the extrusive line. Production of pipes in the mm Ø25-500 range. The Elektrofuzionny fitting is made by means of formation on a sample of cars for molding. Copper in an elektrofuzionny fitting provides irregular shape of a fitting. It is very important that wires did not contact with each other in the course of welding.
Advantages
Does not give in to influence at an earthquake thanks to the flexible structure.
Keeps flexibility at achievement of temperature of -40 °C.
It can be used on buildings as a winding.
It is characterized by high resistance to chemicals.
Are not subject to internal corrosion from liquid and external - from structure of the soil.
Lightweight makes 1/8 from steel weight, thanks to the volume of 0,940 g/cm3.
Possibility of removal from the channel and the return installation to the canal. Reduces need of excavator works.
Does not demand intensive performance of excavator works for providing soft soil.
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Gas pipelines and fitting
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