Channel Nut With Short Spring Factories – Underground utility tunnel support system, C-shaped steel support, embedded channel, T-shaped channel bolt, channel nut, corner code, pipe clamp – Zhanyu

The comprehensive pipe gallery is the underground urban pipeline comprehensive corridor, that is, to build a tunnel space underground in the city, which integrates various engineering pipelines such as power, communication, gas, heat supply, water supply and drainage, and has a special inspection port, lifting port and monitoring system to implement unified planning, design, construction and management. It is an important infrastructure and “living space” to ensure the operation of the city “Life line”