Corrosion prevention of pipes refers to measures to mitigate or prevent the metabolic activity of microorganisms and erosion and deterioration of the pipes in the chemical or electrochemical action inside and outside the media.

Avoid pipeline suffered soil, air and transport medium (oil, gas, etc.) corrosion protection technologies. Pipeline transportation of oil and gas in the most complex soil environment, the transmission medium is also more corrosive and therefore the pipe wall and the outer wall are likely corroded. Once the pipe is corrosion perforation, which caused oil, gas leakage, not only transport disruptions, but also pollute the environment, and may even cause a fire hazard. According to statistics of the US pipeline industry, the direct losses in 1975 due to corrosion caused up to $ 600 million. Therefore, to prevent pipeline corrosion is an important part of the pipeline project.

Corrosion prevention of pipes corrosion can be understood as a description of a chemical reaction occurring materials in their geographical environment. This reaction can cause loss of piping material and resulting pipeline parts or even the entire pipeline system failure. In the pipeline system, the corrosion is defined as: erosion based on a particular route environment, the chemical reactions occurring in the pipeline system for all metals and non-metallic materials, the electrochemical reactions and microorganisms. This reaction can cause damage and loss of pipeline construction and other materials. In addition to the direct damage to the corrosive effects of the material, pipeline damage caused by the corrosion products can also be considered corrosion damage. Are pipeline corrosion will spread, diffusion range depending on how aggressive and corrosive media force existing pipe material corrosion resistance. Temperature, corrosive media concentration and stress situation will affect the extent of pipeline corrosion.

Scope

corrosion prevention of pipes standards apply to civil construction and general industrial equipment, anti-corrosion pipeline construction operations. One metal in the chemical, electrochemical effects of the surrounding medium caused by damage to the phenomenon. Press the pipe is corroded areas, it can be divided into the inner wall and the outer wall corrosion corrosion. Press pipeline corrosion morphology can be divided into general corrosion and localized corrosion. Press pipeline corrosion mechanism, can be divided into chemical corrosion and electrochemical corrosion.