The development of petrochemistry gave rise to Naukhau such as plastic pipes. For a very long time all over the world, but the longest in Russia, used metal as the main component of any water pipe, only recently plastic pipes entered the usual construction life.
Currently, the choice of alternative pipeline materials is very large: metal, plastic or plastic + metal. In order to figure out to consider the advantages and disadvantages of each of the materials.
Metal pipes are good in that they are more thermal, although due to the same they waste their warmth, but with the competent use of this property, you can do without cast -iron radiators at all. The fasteners of metal pipes are more complicated, but at the same time more reliable than plastic ones, they are more resistant to external damage and, if desired, can be dismantled without trimming and damage them. Metal pipes begin to rust over time, and the internal circuit is intensively clogged, the metal enters with the water into a chemical reaction and quickly oxidizes. This significantly reduces their service life, metal pipes must be changed every 20 -25 years.
Plastic pipes are less thermal conductive, they preserve heat better, bringing it to cast -iron and (or) iron radiators. Plastic pipes are more durable than metal, the service life of plastic pipes may exceed 50 years, although there is no confirmed data yet, metal pipes, even with their most careful use, will not last and half of this period of this period. Plastic pipes are easily bending, but over time hard and become very fragile. Plastic pipes also have a temperature limit, although a heat -resistant plastic is based on them, they are subject to melting, especially low -quality pipes. Plastic pipes are environmentally safer than metal ones, they do not emit harmful compounding water due to a special inner layer resistant to destruction and chemical decomposition.
Metal -plastic pipes combine plastic and metal. They are not much different from ordinary plastic pipes, with the exception of an additional layer of aluminum, which perfectly conducts heat, due to this, their strength increases. Flexibility and thermal conductivity. But the increase in these indicators is not so great as to argue that metal -plastic pipes are more reliable than metal, this is not at all.
Summing up, it is possible to note the fact that the metal is much more thermal and more reliable than the plastic, but given the chemical composition of tap water, it is better to use plastic or metal -plastic pipes, the main condition is not to advance and not tear them out, they are less vandalous than metal pipes.