Carbon Steel Pipe Anti-Corrosion Methods

First, lining anti-corrosion

Lining anticorrosion is to prevent the corrosion of the pipe wall by coating the inside of the pipe with chemically stable anticorrosive materials, such as fluorine plastic, polyester and so on. This method is suitable for pipelines conveying various chemical liquids, such as acid, alkali, etc., but the price is high, and the scope of application has certain limitations.

Second, the outer insulation corrosion

External insulation anti-corrosion is coated with a layer of insulating materials on the surface of the pipe, such as polyurethane, silicone acid salt, etc., to prevent the pipe from being corroded and damaged by the external environment in the process of use. This method is suitable for pipelines conveying water, gas, oil and other media, but is susceptible to failure due to impact and abrasion.

Third, cathodic protection anti-corrosion

Cathodic protection anti-corrosion is the use of electrochemical principles, applying a certain current on the surface of the pipeline to make it negative, thus offsetting the natural potential difference and achieving the effect of inhibiting corrosion. This method is simple in construction, low cost and widely applicable, but requires regular equipment testing and maintenance.

Fourth, imitation titanium anti-corrosion

Imitation of titanium anti-corrosion is a resin, graphite, ceramics and other corrosion-resistant materials combined to make a new type of corrosion-resistant materials, corrosion resistance, high temperature resistance and other advantages. This method is suitable for pipelines conveying high temperature, high pressure, metal ions and other harmful media, but the cost is high and the construction is complicated.

Fifth, epoxy mortar anti-corrosion

Epoxy mortar anticorrosion is a kind of epoxy resin plus quartz sand and other particles made of coating coated on the surface of the pipe anticorrosion method, with corrosion resistance, waterproofing, moisture resistance, good weather resistance. This method is suitable for pipelines conveying cement slurry and other media, but needs to be carried out in terms of thickness and adhesion.

In summary, for different pipeline media and use environment, it is very important to choose the appropriate anti-corrosion method. By understanding the principle, scope of application, advantages and disadvantages of the above five carbon steel pipe anti-corrosion methods, you can choose the most suitable anti-corrosion method to extend the service life of the pipeline and save maintenance costs.