Today multi-layer metal-plastic pipes are a modern, practical and comfortable material, which has a long service life.With a maximum operating pressure of 10 atmospheres and temperature of hot water 95 ° C max, plastic pipe will last about 50 years.This type of pipe is widely used in the construction of multi-storey and residential buildings, as well as for repair and reconstruction.
Operational characteristics allow the use of metal and plastic pipes from it separately, and combining with other species pipes.
Metalloplastikovaja pipe products with high mechanical strength is not affected by corrosion and deposition of sediments on the inner walls.In addition, it does not transmit oxygen, which significantly slows the wear
of the heating units.The only disadvantage of metal pipes is their susceptibility to direct ultraviolet rays, open flames and sparks.It is recommended to lay the pipes of metal concealed way - for the plinths or in the channels.
polypropylene pipes are widely used in piping hot and cold water, air conditioning, heating and so on.They connect polypropylene fittings with metal threaded inserts, which allow you to make connections with plug and fix the pipe to the instrument.The service life of these pipes varies from their kind - so pipe PN10 serve for 50 years, pipes PN20 - 25 years at water temperatures above 75 ° C, and the pipe PN25 can last from 10 to 50 years, depending on operating conditions.
Specifications polypropylene pipes do not differ from the pipes of metal.
Polypropylene pipes are resistant to low temperatures, corrosion and deposition.Their drawback is the rigidity, which prevents bending the tube mount without the use of fittings.The wall thickness of polypropylene pipes is 1.7 times the thickness of the walls of metal pipes, so they are also a few external diameter greater than the diameter of metal products.The operating pressure during operation of polypropylene pipe must not exceed 8 atmospheres, and the optimum temperature is between 70 ° C.