Section B of Baoji Fengjiashan diversion pipeline lining renovation project is located in Changqing Town, Fengxiang County, Baoji City. The project is DN1200 concrete pipe, the length is about 2 kilometers, using HDPE U-folding lining technology and stainless-steel lining technology for construction.

There is a DN800 prestressed reinforced concrete water supply pipeline on the south side of Yintan Avenue (Zhejiang Road to Nanhai Road). It was built and used in the early 1990s. It has a long operating life and frequent pipe bursts. It cannot be carried out in the near future. Excavation and renovation of water supply pipelines. The pipeline is now repaired with equal diameter reduced diameter lining high-density polyethylene (HDPE) pipe technology, with a total length of 5424m. Construction will be completed in 2019, and the completion acceptance will be qualified.

The Dagang Oilfield Xinquan Seawater Desalination Pipeline Project is located in Dagang District, Tianjin. There are two DN800 water supply pipelines running in parallel. Due to long-term buried underground, the pipeline has serious corrosion outside, leaking in some locations and leaking water from the exhaust valve. Part of the lining anticorrosion layer is intermittently falling off, and now it is affecting the normal production and operation of the water unit. Now the "U"-shaped compression lining HDPE pipe construction technology is used for pipeline lining repair and renovation. The total length is 10 kilometers. It has been completed and passed the completion acceptance.
   

The 800mm water supply pipeline lining repair project of Bosui Line is located between Bozi Water Plant and Suifeng Water Plant in Linghai City. The total length is about 5.7 kilometers. Due to long-term disrepair, the pipe wall is seriously aging, and there are leaks and leakage at some joint positions. The leaking of the exhaust and mud valves is not tightly closed, which has affected the normal water consumption of nearby villagers. Now the "U"-shaped compression lining HDPE pipe construction technology is used for pipeline lining repair and renovation. The construction from 2018 to 2019 has been completed. The completion acceptance is qualified.

Shenyang water supply pipe network reconstruction engineering - Zhaogong Street lining HDPE pipeline repair engineering: the HDPE lining pipe is inserted into DN700 cement pipe, with the total length of 5,900m. Phase I engineering was started in September 2012 and completed in December 2012. The engineering is qualified after completion acceptance.

Guilin south area and east area water supply pipeline network project Guiyang road pipeline lining project, DN500 cement pipes lining HDPE pipes, overall length of 12,000 meters, started in February 2011, which lasted 115 days. After completion and acceptance, project quality is qualified.