I won't rank it, just classify it briefly.
The top domestic companies are: Harbin Institute of Technology, Harbin Welding Research Institute of Mechanical Research Institute, Tianjin University, Shanghai Jiaotong University, Northwestern Polytechnical University, Xi Jiaotong University and 725 institutes.
The rest are more general. But each school has its own emphasis. For example, Lanzhou University of Technology focuses on non-ferrous metal welding, while Beijing University of Technology focuses on welding materials and so on. Huazhong University of Science and Technology and South China University of Technology have not done any research on these two schools, and the specific situation is not clear. The landlord can visit the websites of other schools by himself. Hefei University of Technology and Shandong University pay more attention to equipment, that is, welding power supply. Among them, Shandong University is good at power supply, and Hefei University of Technology focuses on resistance welding and power supply research in resistance welding. Others are Jiangsu University of Science and Technology, focusing on the application research of welding technology in shipbuilding and the research of power supply. Taiyuan University of Technology and north university of china focus on welding arc physics and welding materials.
The welding specialty of other schools has not been deeply understood. For example, Shenyang Industry, Harbin Project and Yanshan University. The landlord himself can see it on their website! !