油气管道的腐蚀是造成管道事故的主要原因之一,而管道外涂层补口更是关系到整条管道的防护层质量.本文把外防护补口技术按照胶带型和涂敷型进行了分类归纳,对当前使用的补口技术的性能特性、使用范围、工艺特点等进行了详细分析,这将有利于管道补口材料以及方法的比选和决策.还讨论了今后管道外补口研究面临的问题及其研究方向.

Oil and gas pipeline corrosion is one of the major reasons causing pipeline accidents.Joint coating for external corrosion protection of pipelines,which is even more referred to the whole pipeline anti-corrosion coating quality,is an important link in pipeline construction.In this paper,the external anti-corrosion joint coating technologies are classified in accordance with the tape and coatings,the performance characteristics,application ranges and technological features of the most anti-corrosion joint coating technology used popularly at present are in detaile analyzed,which will help to compare and select anti-corrosion materials for pipeline joint coatings and to perform related decision-making.The problems faced by the future external pipeline anticorrosion joint coatings and the research direction are discussed.