西气东输三线闽粤支干线潮州段主线贯通

Core Viewpoint - The successful completion of the main line of the West-to-East Gas Transmission Project's Fujian-Guangdong branch, undertaken by Zhongyuan Construction, marks a significant milestone in China's natural gas infrastructure development [1] Group 1: Project Overview - The project spans 64.32 kilometers and includes two valve stations, located in the areas of Raoping County and Dapu County in Guangdong [1] - It is part of a key national initiative aimed at enhancing the interconnectivity of natural gas infrastructure [1] Group 2: Challenges and Solutions - The project team faced several challenges, including complex mountainous terrain, rainy weather, and a complicated surrounding environment [1] - To address these challenges, the team optimized the automatic welding tools used in tunnels and conducted preliminary welding tests outside the tunnel using steel pipes to simulate the tunnel profile [1] - The adjustments made to welding parameters resulted in a first-time pass rate of over 98% for welding, ensuring the project's successful completion [1]