The 4,269-kilometer long Second Sichuan-East Natural Gas Pipeline was ignited for welding operations

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On January 5, 2025, welding commenced on Section 3 of the construction project for the Sichuan-Guangdong Gas Pipeline Line 2, specifically the Chuan-Yu-E section (Tongliang–Qianjiang), which is being carried out by Jianghan Oil Construction Company, a subsidiary of the Petroleum Engineering Construction Corporation. The total length of this pipeline project is 4,269 kilometers. Once completed, it will deliver over 20 billion cubic meters of natural gas per year to the areas along its route. This is of great significance for China in further adjusting its energy structure, promoting green development, enhancing the supply of clean energy, and achieving the \"dual carbon\" goals. The Tongliang-Qianjiang Section 3 starts at the border of Lichuan City in Hubei Province, passes through Enshi City and Jianshi County, and ends in Badong County. It has a total length of 273.5 kilometers, with a pipe diameter of 1219 millimeters and a design pressure of 10 megapascals. There are 16 stations and valve rooms installed along this section. The line runs through complex karst mountainous areas such as the Qiyue Mountains, where there are many caves and sinkholes. It passes through 81 mountains, railways, and high-grade roads, making construction extremely difficult. Before the project commenced, the company carried out thorough preparations and advance planning, organizing personnel to conduct detailed surveys along the route, and continuously optimizing the construction plans to ensure the safe and smooth progress of the project. At the same time, the company also organizes welding teams to conduct technical training, enabling them to master fully automatic welding, automatic TIG welding, and combined automatic welding techniques in order to ensure the quality of construction projects.