The east section of the second Sichuan-to-East Gas Transmission Pipeline, an essential national energy infrastructure project under China’s 14th Five-Year Plan (2021-25), has accelerated construction across Hubei, Henan, Jiangxi, Anhui, Zhejiang and Fujian. The project will enhance regional gas supply and strengthen China’s natural gas pipeline network.
Spanning 2,698 kilometers, the east section consists of one mainline, two connection lines and three branch lines. With a design pressure of 10 MPa and an annual transmission capacity of 14 billion cubic meters, the pipeline will transport gas from Sichuan and the third West-East Gas Pipeline to Yangtze River regions.
During construction, China Oil & Gas Pipeline Network Corporation (PipeChina) adopted advanced domestic equipment and innovative technologies to enhance efficiency, safety and environmental protection. The use of tungsten inert gas automatic welding has improved construction efficiency by approximately 1.5 times.
Prefabricated steel culverts are being used in road crossings to reduce traffic disruptions, while tunneling and shield technology ensure green construction in sensitive areas.
The second Sichuan-to-East Gas Transmission Pipeline stretches 4,269 kilometers across eight provinces and municipalities. Upon completion, the pipeline will integrate major gas pipelines and markets, expanding China’s gas network and increasing transmission capacity to 26 billion cubic meters per year. This will enhance gas exports from Sichuan, support peak demand in central and eastern regions, and drive high-quality development along the Yangtze River Economic Belt.
Since the 14th Five-Year Plan began, PipeChina has been accelerating oil and gas pipeline infrastructure development. By 2025, the company aims to complete over 2,000 kilometers of new pipelines and increase transmission capacity by 25 billion cubic meters, ensuring the achievement of its 16,500-kilometer target.
