Steel heating pipes: the advantages of
Most of the heating networks in old houses are serviced by pipelines from ordinary steel, moreover, in almost half of modern heating systems in civil and industrial construction this "rare" material is used. What is so fond of designers and builders is not the most convenient in the installation of steel pipes, and end-users are not always the ideal performance characteristics of these metal pipelines.
We will not separately stop the technological properties of various products from the assortment of metal pipes for heating, but simply designate the significant moments for installation and operation, and of course start with a positive.
- Steel pipes in any design( galvanized, stainless steel) have a very low coefficient of linear thermal expansion within 0.012 mm / mK.In practice, this means that with equal temperature loads in the heating system, metal pipes made of steel will give the head a 5-fold plastic edge, i.е.longitudinal deformations of the pipeline will be minimal.
- The high coefficient of thermal conductivity can be attributed to the merits of the material( heat loss in the supply manifolds is, of course, bad, but the additional area of heating the living rooms from the risers is very good).
- Mechanical strength. With proper installation, galvanized steel pipes in heating networks are able to withstand a pressure test pressure up to 40 atm., Which is not always possible to make them a plastic counterpart having comparable geometric parameters.
- Affordable price in the category of galvanized products, comparable to the cost of tubular metal-plastic structures. Black steel, which is still used in the wiring of external networks, has no equal in economic terms.
- Easy installation of metal heating pipes from steel. With the necessary set of tools and certain skills, this is really quite simple, which is confirmed by the following video.
Metal pipes made of steel: what you need to take into account
You can not do without a fly in the ointment. Building materials without flaws do not happen, and steel pipes in any pipeline systems( heating layout especially) work for wear and tear in the literal sense of the word. Mechanical abrasion, corrosion, deposits on internal porous surfaces, as a result, the service life of the lower classes of metal from the strength of 15-20 years.
- Installation of metal heating pipes assumes that they must work in standard conditions in accordance with GOST 3262-75, but who and when observes them. The jumps in the temperature and pressure of the coolant in the heat supply systems lead to rapid corrosion and mechanical deterioration of the internal surfaces and cracking of the fittings.
- Steel structures have a high electrical conductivity, theoretically your neighbors can ground their household appliances to the riser, and you decide to touch the radiator. ..
- High specific gravity. In this component, metal products are completely lost to polypropylene pipes, so steel pipelines are increasingly found in areas of private development.
Features of installation of heating pipes from steel
All supply main pipelines of central heating systems, as a rule, are made of black steel. The assembly of segments of such networks is made by electric welding, and the quality of such works you will evaluate by the frequency of emergency situations in the heat supply of your home. The use of "blackies" in intra-house wiring is already becoming exotic.
It is not recommended to cook galvanized steel piping structures according to the same GOST 3262-75.Calibrated connecting elements( couplings, bends, tees, etc.) are equipped with a standard thread. To replace the old one or install a new heating network, you can buy pipe lengths of the required length and make a thread for the required screw connection( lair and vice in your hands) or simply type the desired mold with the finished thread.
For the information of : the price for galvanized water and gas-conducting( by classification) steel pipes used in heating circuits is: 20x2.8( diameter, wall thickness) - 46 rubles, 32x3.2 - 80. Compared with the metal-plastic version, the savings of twotimes. There is something to think about.
