English
郭生武, 方军锋, 郝晓晨, 王志宏, 邓军孝. 埋地钢质管道外防腐层的腐蚀机理[J]. 油气储运, 2003, 22(8): 19-22. DOI: 10.6047/j.issn.1000-8241.2003.08.006
引用本文: 郭生武, 方军锋, 郝晓晨, 王志宏, 邓军孝. 埋地钢质管道外防腐层的腐蚀机理[J]. 油气储运, 2003, 22(8): 19-22. DOI: 10.6047/j.issn.1000-8241.2003.08.006
shu
GUO Shengwu, FANG Junfeng, . Corrosion Mechanism of External Coating of Buried Steel Pipeline[J]. Oil & Gas Storage and Transportation, 2003, 22(8): 19-22. DOI: 10.6047/j.issn.1000-8241.2003.08.006
Citation: GUO Shengwu, FANG Junfeng, . Corrosion Mechanism of External Coating of Buried Steel Pipeline[J]. Oil & Gas Storage and Transportation, 2003, 22(8): 19-22. DOI: 10.6047/j.issn.1000-8241.2003.08.006
shu

埋地钢质管道外防腐层的腐蚀机理

Corrosion Mechanism of External Coating of Buried Steel Pipeline

    摘要
  • 摘要: 介绍了埋地钢质管道外防腐层有机覆盖层的防腐蚀机理, 分析了有机防腐覆盖层与阴极保护的关系, 指出了三层聚乙烯防腐层、熔结环氧粉末防腐层和液体环氧涂料的优缺点, 推荐采用100%固体聚氨酯防腐涂料作为管道外防腐层的补口材料, 并提出了提高覆盖层有效性的途径。

     

    Abstract: The anti-corrosion mechanism of external organic coating of buried steel pipeline is introduced. The re- lation between CP and organic coating is analyzed. It is pointed out that 3PE.FBE and LEC (non-solvent type)have different scope of work. For the use of field coating for welded joint, the 100% solid polyure-thane is recommended. The method to enhance the efficiency of external coating is provided.

     

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