Analyses of Factors and Mechanism of the Corrosion in Hua ― Ge Pipeline

摘要

According to the statistics of the corrosion and the service of the pipeline form Huatugou to Geermu and referred to the water content in the soil and the conditions of the corrosion in this district, the factors and mechanisms of the corrosion of the pipeline have been analyzed. It is hold that the corrosion punching hole of the pipeline is caused by the oxygen concentration corrosion after the insulating layer at the dry ― wet boundary were filled with water, and the auto catalyzed electrochemical corrosion of the electric shield of the antisepsis layer of the pipeline. So the main effective factor is the water content in the soil and the closed environment out of the pipeline.