The Nantong-Yongzhi section of the Sino-Russia Eastern pipeline phase 3 is a key oil and gas infrastructure project. After completion, it can realize the interconnection of the Sino-Russia Eastern pipeline, the 1st West to East pipeline, the Shanghai branch of the 2nd West to East gas pipeline. 

It plays an important role in optimizing energy and realizing energy conservation and emission reduction in the Yangtze River Delta and various provinces and cities along the line. passes through Xindian Town, Rudong County, Jiangsu Province, Shigang Town and Shizong Town, Tongzhou District, and Sanyu Town, Tongzhou Bay. The 1st lot of the project is contracted by Sichuan Oil Engineering & Construction Co., Ltd. (CNPC Group), of which the length of the pipeline is 34.1km, pipeline diameter1422mm, pressure 10MPa, wall thickness 32.1mm and material X80 steel. 

Two spreads of Xionggu pipeline automatic welding machines are used including two units of Xionggu internal welding machines and 10 stations of Xionggu dual torch external welding machines. The dense irrigation channels, farmhouses and the temperature above 40 ℃ in the area make the construction even harder. The contractor completed a total number 100 joints in 6 days, with a qualified rate of 98% with the support of Xionggu technical service team.