[Welding construction of China-Laos railway seamless track completed]On September 16, 2021, the welding construction of more than 400 kilometers of seamless track of the China-Laos Railway of China Railway Second Bureau was completed. Since the rail welding team of the China-Laos Railway Track Laying Base of China Railway Second Bureau broke ground in May 2020, the cadres and employees of the rail welding base have overcome the difficulties of construction sites and late equipment arrivals in the rainy season. They have passed through 75 tunnels, 165 bridges, 20 stations, which lasted 16 months, successfully completed the welding construction tasks of 500-meter long rails and seamless tracks on the whole line. Editor/Tian Zengpeng
On March 25, 2026, the first ultra-high voltage project of Henan Power Grid during the 15th Five Year Plan period, the main transformer expansion project of the 1000 kV Yunan Te High Voltage Substation, officially began construction. After the completion of the project, the power supply capacity can be increased by 50%, which will further enhance the safe operation of the power grid and the guarantee of power supply, and help promote the green and low-carbon transformation of energy.Editor/Gong Ziwei
On the morning of March 26, 2026, the "Wanmei Electric Power" shield machine of the 500 kV Wuhu GIL pipe gallery project was excavated in Nicha Town, Wuwei City, and the project officially started. This project provides support for the Yangtze River transmission channel of the Gansu Zhejiang ± 800 kV high-voltage project, relocating the original 500 kV line to the ground and reserving two 500 kV cross river channels. The project is the first 500 kV transmission pipeline crossing the Yangtze River in China, with a shield section length of 3554.4 meters and a tunnel outer diameter of 11.6 meters. It is equipped with customized large-diameter shield machines.Editor/Gong Ziwei