If not taking anticorrosion measures properly,or coating failure,gas pipeline made of steel underground would leak because of erosion after running for a period of time,which could be a few months or several years.The consequences caused by the leakage are immeasurable.A loose corrosion current in ground of the pipe,called the stray current corrosion,also known as interference corrosion is electrochemical corrosion caused by an external factor of high strength,stray current leads to the destruction of serio...