埋地金属管道外壁腐蚀原因及防治措施

摘要

金属管道长期埋置地下,受化学腐蚀和电化学腐蚀的影响,最终导致金属管道腐蚀穿孔.为了减小管道的腐蚀速度,延长管道的使用寿命,分析了埋地管道的腐蚀原因及主要腐蚀因素,并提出了几点有效的防腐措施.%Metal pipelines buried underground for long time, which are influenced by chemical corrosion and electrochemical corrosion, finally lead to corrosion failure of metal pipelines.In order to reduce the corrosion rate of pipelines and extend the service life of pipelines, the corrosion reasons and main corrosion factors of the buried pipelines were analyzed. Effective anti-corrosion measures were put forward.