In some cases, used polyethylene gas pipe ?

polyethylene pipe gas pipeline: the main advantages

Compared with steel, gas pipes made of polyethylene have a number of advantages.Firstly, a greater service life, which is an average of 50 years.This is due to the fact that they do not corrode.Secondly, they are 3-4 times lighter than metal tubes.This facilitates installation and transportation process.Third, do not require any special electrochemical protection, resistant to aggressive media.Fourth, the environmental safety of the material, it does not harm the environment and human health.

Fifth, the low cost of both the pipe and mounting.In addition, the installation takes very little time, as it does not need to apply any technique in the process.Implemented by a butt welding of polyethylene pipes.Sixth, do not need to do additional waterproofing.

Seventh, high quality pipes, because they are made in accordance with international standards EN, DVGW G 472 and ISO.Eighth, for a long time preserved the effectiveness of the whole system, since the bandwidth does not decrease.

surface of the pipe from the inside and the outside does not grow and remains as smooth .

In Russia, the efficiency and durability of polyethylene pipes and appreciated fully.Today they are used for gas pipelines with pressure up to 1.2 MPa.But more recently the use of this material was limited.However, over 15 years of use polyethylene pipes showed that they can be used for high-pressure gas pipelines.

They are made in Russia in accordance with GOST 50838-95.

Polyethylene pipes for gas: their scope

Polyethylene pipes for gas supply are used only in certain (limited) areas.We describe them:

• Apply them only for underground installation.For wiring in residential areas do not use them as an aggressive atmosphere reduces the shelf life of the material and, besides, it does not meet the proper safety precautions.The houses used a metal pipe.

• forbidden their use in areas where there is high seismic activity (more than 6 points), the air temperature is less than -45 ° C.You also can not use the tube I and II category of human settlements and where will settle any passages through the obstacles.

Specifications

Made 2 brands such pipes: PE-80 and PE-100 , the wall thickness of which is, respectively, 2.3 mm and 3.5 mm.First used in systems with a pressure of 4-6 atmospheres, the latter with an operating pressure of 3-12 atmospheres.They have the form of long lines, thereby reducing the number of places for docking, ie simplified installation.their operating temperature should range from -15 ° C to +40 ° C.

Transporting them is carried out at t is not lower than -10 ° C.Shelf life up to the time of installation is about 2 years old.At the same time they should be under a canopy in unheated buildings.During the installation of the pipe connected to the special elements and parts (couplings).Laying plastic pipes is carried out strictly under the ground.In places where the output of the system and move into the house, metal pipes are used.