Application of dry film hot melt adhesive type heat shrinkable tape in city gas pipeline anticorrosive patching construction
Ren Hongying;Dou Zhongliang;Li Zhichang;Foshan gas group co.,LTD.,;
The construction methods of anticorrosion patch for urban gas pipeline can be divided into wet film method and dry film method. In recent years, wet film method is mostly used for installation. According to the investigation, it is found that there are some problems in wet film installation, such as uneven thickness of primer and failure of heat shrinkage sleeve; However, dry film installation can ensure the thickness of the paint film and form a doublelayer protection structure, which can effectively improve the quality of anticorrosive repairing. This paper mainly introduced the application of dry-film hot-melt adhesive tape installation technology in urban gas pipelines, including the key points of quality control of dry-film repairing construction. The difference between dry-film and wet-film processes is also compared and analyzed in this paper.
【CateGory Index】： TU996.8