Abstract:
Metal pipes for hydrogen transport are prone to hydrogen embrittlement and corrosion. In contrast, non-metallic composite pipes have gained significant research interest recently due to their advantages such as corrosion resistance, hydrogen embrittlement resistance, and flexibility. This paper analyzes domestic and international standard systems for hydrogen transport using non-metallic composite pipes, relevant research and applications, factors affecting hydrogen permeation in materials, and pipe connection designs. The results indicate that: High-barrier flexible non-metallic composite pipes exhibit good potential for hydrogen transport. The environmental temperature significantly affects hydrogen permeation in non-metallic materials, whereas low pressure has minimal impact. Existing non-metallic composite pipe connections face challenges such as reduced sealing and complex maintenance in practice. This study offers valuable theoretical insights and practical guidance for the large-scale application of non-metallic composite pipes in the field of hydrogen transport.