Anticorrosion of oil and gas pipelines
Because oil and gas pipelines are buried underground for a long time, they are very prone to corrosion problems due to soil, moisture and other factors. At present, pipeline corrosion in the petrochemical industry is mainly divided into two types: 1) External corrosion, the so-called external corrosion specifically refers to the corrosion caused by the connection between the metal material of the pipeline and the corrosive medium in the external environment.At the same time, since some pipelines have an insulation layer outside, moisture may accumulate under the insulation layer due to other factors (sometimes due to the high temperature of the medium in the pipe, the external moisture may be heated) to cause corrosion. 2) Internal corrosion, the so-called internal corrosion specifically refers to the corrosion of the inner layer of the pipeline. The types of internal corrosion that occur are different depending on the properties of the fluid in the pipeline. Including acid corrosion, ...