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The choice of field joint coatings and mending coatings of buried gas pipeline 3PE coating
Author of the article:Li junzhong
Author's Workplace:CNOOC-FUJIAN LNG Co., ltd
Key Words:field joint coatings mending coatings 3PE coating buried pipeline
Abstract:In improve the field joint coatings and mending coatings quality of the 3PE coating of the buried pipeline in service, and reduce the risk of pipeline corrosion perforation, it is very important for choice the appropriate field joint coatings and mending coatings. Through analysis and discussion on the performance and application situation of the commonly used and updated field joint coatings and mending coatings at home and abroad, and combined with the basic principles of field joint and mending of buried pipeline in service with 3PE coating, concluded that the results are as follows: polypropylene tape with the self-adhesive layer of butyl rubber pressure sensitive adhesive and the compound system of viscoelastic body + protective belt is the preferred material on field joint and mending of buried pipeline in service with 3PE coating.
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