Research on Key Technologies for the Hydrogen Transmission in X52M SAWH Steel Pipe
Both domestic and foreign codes for hydrogen pipelines were discussed,including having their requirements for selecting the hydrogen pipelines compared and the pipeline materials applied in the in-service projects put in order and the applicability of X52 in hydrogen pipeline summarized.In addition,the trial production of X52M strap and SAWH pipe was implemented and the applicability of both standard strap and trial strap in hydrogen environment was evaluated to show that,through considering hydrogen compatibility,applying X52M SAWH pipe to the hydrogen pipeline is feasible and higher requirements for chemical elements,hardness,inclusion and grain size become necessary.Meanwhile,the applicability of welding methods for hydrogen transmission pipeline under different terrains,pipe diameters,wall thickness and assembly welding methods were summarized and the special requirements under hydrogen environment were proposed.
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