Metal & Mining
| Thu 25 Jun 2026
Beijing, June 25 -- Tianjin Youfa Dezhong Steel Pipe Co Ltd has submitted a patent application for Galvanized Square and Rectangular Tube Adjustable Hot Galvanizing Layer Purging Device. Du Zhifan, Chen Kaiyang, Yang Yuzhi, Gao Hongquan, Shen Yongdong, Shi Yucheng, Huang Sheng, Li Li, Wu Haitao, Shang Yongze, Yin Hang, Ding Xiuc..