R & D of Steel Plate and LSAW Pipe for Hydrogen-transmission Piping

Briefed here in the essay are the importance of the hydrogen energy in the State Energy Strategy,and development situations and trends of the hydrogen transmission piping both at home and abroad. Also described are the status of the trial manufactured steel plate for hydrogen transmission purpose,and the trail manufacturing process with the said steel plate,including steel pipe formation and welding etc. The sample pipe as made is subjected to the tests for compatibility of the finished pipe with the hydrogen environment,and the sensibility of the material to hydrogen embrittlement so as to determine the design tips for the hydrogen transmission-purposed steel plate and the welding process for LSAW pipe. The design scheme of the hydrogen resistant inner coating is proposed. Finally it is pointed out that the key actions as taken in the future to realize the consistent and reliable transmission of pure hydrogen or hydrogen-mixed gas via piping will include seeking low cost and high strength hydrogen embattlement-resistant material,and improving the design and manufacture technologies for high performance hydrogen energy-transmission piping,and the technologies for operation,control,emergency-responding and maintenance of the hydrogen energy-transmission piping.