Steel
| Wed 12 Feb 2025
Beijing, Feb. 12 -- Hebei Iron & Steel Group Mine Design has been granted a patent for rolling displacement device used during welding of barrel workpiece. Sakae Akira, Zheng Weimin, Li Hua, Shang Yue, Li Zhipeng, Wang Lei, Tian Yilin, Liu Bin, Zhang Chenglong, Zhu Hanchao, Wang Zhijia, Wang Dan, Zhu Mengran, Chen Yongwang, Liu ..