Polyethylene pipes - general information
Today, polyethylene pipes are so widespread that the variety of their species is several dozen. They are classified according to several basic criteria: by application, by external diameter, by the permissible bending radius, by operating pressure, and so on.
In the field of application, polyethylene pipes for external water supply networks, gas supply, sewerage, underfloor heating, internal water supply systems and many others are distinguished. According to the working pressure, this material is classified as follows: polyethylene pressureless pipe, pressure and working under vacuum.
Pressure and pressureless polyethylene pipes
The name "non-pressure" speaks for itself. This type of communication is used for systems whose maximum working pressure does not exceed 0.15 MPa. Previously, pipes of various materials were widely used in non-pressure water supply systems, now, along with metal and asbestos-cement pipes, non-pressure polyethylene pipes were also used, GOST R 50838-2009 allows them to be used even when laying heat supply systems. Such funds are used, mainly, in gravity drainage, drainage, drainage systems.
Low pressure polyethylene pressure pipes are divided into three types: PE100, PE80, PE63.They are distinguished by the brand of polyethylene and the field of application. PE100 and PE80 are recognized as a new generation material, and the range of their application is much wider than that of PE63.They are much stronger, because they can withstand more pressure. They are used in sewage, gas and water supply systems. PE63 is often used to protect a layed electrical cable, a bit less often - in sewer systems.
Characteristics of polyethylene pipes
Thanks to its properties, polyethylene pipes have become so popular. They are much lighter than metal ones, they have good elasticity. To lay these pipes you need a narrow trench, or it will not be needed at all. Easy installation repeatedly accelerates the laying of the entire network. Production, production costs and transportation of such pipes are much cheaper than steel, cast-iron or asbestos-cement pipes.
Polyethylene pipes for water supply do not require any control, are unpretentious in maintenance, easily dismantled. Due to their elasticity they will function reliably even with mechanical overloads.
Plastic pipes have increased thermal insulation properties, are not susceptible to corrosion, and freezing in the water does not affect the properties. With dynamic loads, they are able to restore their shape without permanent deformation. The maximum smoothness of the inner surface and passivity to biochemical environments prevent the accumulation of colonies of microorganisms and the formation of layers, which increases the total operating time of the entire system. Almost the only drawback of these communications is reduced strength in mechanical compression, and otherwise, they perfectly perform their functions and serve the benefit of humanity.
