Corrosion of the pipes is manifested by the deterioration of the material, usually it is metal and copper. It is usually the pipes and fittings that are most often stung and gnawed because of a reaction of the material with its environment (water, caustic, bacteria...). How does this phenomenon appear? What are the risks?
Corrosion of piping: the risks
The corrosion problems at the piping level are caused mainly by the water flowing through it. Steel and copper are most exposed to this deterioration when in constant contact with water. The pressures, the high temperature or the chemical treatments favor and still activate the corrosion.
The first possible risk of this corrosive phenomenon is the drop in water quality, the composition is likely to be polluted during its journey to homes. The residues accumulate on the internal wall of the pipes, thus causing so-called "under deposits" corrosion.
The second risk is of course water leakage caused by cracks, perforations and porosity pipes. In jargon, it's about " pitting corrosion "Characterized by a pipe stitched several times at a localized area.
Precautions to take
During a pipe installation by a professional plumber or during a repair, it is essential to use materials meeting the NF DTU 60.1 standards relating to the rules of implementation in sanitary plumbing.
As a precaution, precautions should be taken as soon as they are implemented. The rule to follow in plumbing is simple: water must flow from the "least noble" metal to "the noblest". Inevitably, it is strongly recommended to avoid the use of copper pipes for a closed circuit (DHW loopback) integrating a return.
Piping: innovative models
Cheaper, less corrosive and resistant, other materials such as PER pipes, PVC pipes or multilayer pipes have been on the market for a few years. These pipes replace more and more copper.
Finally, it should be known that even if preventive measures can be taken (precautions with the implementation, good choice of material...), the corrosion can still occur after many years. The situation must be quickly remedied for a safe and comfortable use of the facilities. In the long run, if no action is taken, the pipes become stale, can become clogged and corrosion of the pipes becomes inevitable and worsens.