【摘 要】
：
As protective pipe of pipe crossing,when crossing the railway or highway or rivers,casings can protect the protective coating of casing pipeline very well.But the metal casing has shielding effect on
【机 构】
：
Changzhou University Petroleum Engineering School,Changzhou,Jiangsu,China
【出 处】
：
国际腐蚀工程大会(ICEC2016)
论文部分内容阅读
As protective pipe of pipe crossing,when crossing the railway or highway or rivers,casings can protect the protective coating of casing pipeline very well.But the metal casing has shielding effect on cathodic protection current and detecting signal of the buried metal pipeline,which makes the casing pipelines corrosion protection and detection technology become one of the biggest challenges of the safe operation and integrity evaluation of the pipeline.
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