High-Frequency-Induction Welded Steel Pipes for the Future Hydrogen Gas Grid

Abstract Pipeline operators and pipe manufacturers need to consider the transport of hydrogen (compressed gas) to ensure the suitability of pipes and components for safe design. This article summarizes the status of hydrogen transport and storage in steel pipelines from the perspective of a steel pipe manufacturer. It reviews current standards, methods for testing pipeline materials and resulting requirements. The behavior of different high frequency induction welded steel pipe materials under hydrogen load is investigated and discussed on basis of fatigue requirements, crack growth behavior, hydrogen permeation and ductility. The article also gives insight to the importance of the inner surface of the pipe for hydrogen exposure. Comparative service life calculations are presented and evaluated based on crack propagation curves and different design curves, initial defects, and load scenarios.