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During the actual construction of oil and gas pipelines, it is done to reduce the degree of corrosion of the pipelines, as well as to protect the pipelines and cathodes from corrosion. The construction party can adopt cathodic protection measures, which are mainly divided into two types: current-based cathodic protection measures. Furthermore, in the context of cathodic protection for oil and gas transmission pipelines using sacrificial anodes, construction companies should select appropriate cathodic protection methods based on the actual conditions, in order to protect the metal pipelines. Through years of development in China as well as on-site investigations into the condition of oil and gas transmission pipelines, cathodic protection has proven to be the most effective method for preventing corrosion of metal pipelines in China. As a result, most construction companies in the country now use cathodic protection measures to safeguard metal pipelines, and this technology is widely employed by those involved in the construction of oil and gas transmission pipelines in China. Among them, graphite is the most commonly chosen anode material by construction companies; it is also the best material available at present. It can effectively protect oil and gas pipelines from corrosion during transportation, thereby greatly reducing the likelihood of accidents involving metal pipelines, as well as the frequency of casualties and property losses. This in turn contributes to the development and progress of society and **, providing better protection for people’s lives.