Xu Kai, a teacher at the Department of Process Equipment and Control Engineering of the School of Environment and Chemical Engineering at Yanshan University, is a permanent staff of the State Key Laboratory of Metastable Materials Science and Technology. He holds the position of associate professor and is a doctoral supervisor. He is also a "Yanshan Scholar" outstanding talent. His research focuses on the preparation and failure analysis of pressure vessels and pipelines, including the fatigue behavior, hydrogen embrittlement behavior of metal materials such as pipeline steel, and the research on anti-fatigue/hydrogen embrittlement manufacturing technologies for pressure pipelines. He has been responsible for 3 provincial and ministerial-level scientific research projects funded by the National Natural Science Foundation of China and the Hebei Provincial Natural Science Foundation, and has participated in 3 National Natural Science Foundation projects. He has published over 30 papers in TOP journals such as Corrosion Science, International Journal of Fatigue, and Materials Science and Engineering A. He has also applied for 4 national invention patents. He serves as the guest editor of the SCI-indexed journal "Metals" and the young editor of the journal "Welded Pipes". Additionally, he serves as a reviewer for several international high-level journals such as CS, IJHE, EFA, and IPVP.