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针对民航津京输油管道工程所经地带水网发达、腐蚀环境恶劣的特点,决定选择熔结环氧覆盖层作为防腐覆盖层。介绍了该管道从钢管的工厂预制防腐技术到施工现场的补口技术。在施工完成几年后,选择该工程中腐蚀环境比较恶劣的管道段进行管道阴极保护测试,测试结果表明,熔结环氧覆盖层具有优越的防腐性能,使得镁阳极和锌阳极的使用寿命得到了相应的延长。
Aiming at the developed water network of the Jinjing Oil Pipeline Project of civil aviation and the bad corrosive environment, we decided to choose the fused epoxy coating as the anticorrosive coating. This paper introduced the pipe from the steel factory prefabricated anti-corrosion technology to the construction site filling technology. A few years after the completion of the construction, the pipeline cathodic protection test was selected for the pipe sections with relatively corrosive environment in the project. The test results show that the fused epoxy coating has excellent corrosion resistance so that the service lives of the magnesium anode and the zinc anode are obtained The corresponding extension.