关键词: 复合管, 热塑性复合管, 复合增强钢管, 技术瓶颈, 可行性研究

Abstract: To highlight the actual conditions of steel tubular used in long-distance oil and gas pipelines, the Chinese and foreign pipe industries attached importance to the prospect for application of non-metal composite pipes (such as steel-plastic composite pipe, aluminum-plastic composite pipe, glass reinforced plastic pipe, thermoplastic composite pipe and composite reinforced steel pipe), focusing on development of such new products as non-metal composite pipes. This paper makes analysis of the advantages and disadvantages of steel tubular application and briefs about the functions and application of thermoplastic composite pipe (RTP) and composite reinforced steel pipe. It also elaborates the feasibility on application of composite pipe for long-distance oil and gas pipelines as well as the issues to be solved, such as standards, service life span, raw material supply, inspection, linkage and transportation. It is pointed out that the domestic pipe industry should make full use of creativity and settle the bottleneck for industrial application of composite pipes for long-distance pipelines, while tracing, importing and absorbing the latest foreign technology.

Key words: composite pipe, thermoplastic composite pipe, composite reinforced steel pipe, technological bottleneck, feasibility study