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Corrosion and Scaling in Carbon Steel Pipes


  Carbon steel pipes or galvanized steel pipes are used in many installations. However, carbon steel pipes are conventionally in most older domestic installations. Carbon steel pipes are used in most industrial applications, as carbon steel has still the best cost/benefit ratio. From a technical point of view, carbon steel pipes feature a relatively rough inside surface.The scale is then generally deposited first at these points. This leads to even rougher surfaces and exacerbates the process. In addition, the zinc coating in the pipes is also dissolved under unfavorable water conditions, thus leading to corrosion of the pipes.
The result is that many of the pipes virtually clog up over the years. The cross-section is reduced more and more and the water pressure drops.
Pursanova TM is capable of stopping and reversing corrosion and scale build-up. This reversal process starts after Pursanova TM is installed. The carbon steel pipes are cleared again depending on flow rate and regularity at which the water is tapped. In the industry, the water is flowing most of the time. In some cases, this can be seen from the rust or scale flushed out or, even after only a short time, you can see that the water pressure and the flow rate increase again. In many cases, customers installed test sections on which it was possible to prove irrefutably that corrosion had been stopped and that deposits had been fully removed. Once the existing deposits have been removed and the bare iron appears, this iron is automatically coated with a protective layer of saturated iron oxide called magnetite, thus stopping corrosion.

Pursanova TM is used in thousands of applications, where the corrosion is brought down drastically. In domestic applications, the brown water at the tap points disappear, in industrial applications sometimes under very rough conditions, the corrosion rate is reduced by 90% or more. are a lot of proven cases, where former corrosion rates of 10 mpy are brought done to less than 1mpy.

See as a related case study from corrosion in a cooling loop, or scaling in a cooling loop.