国产喷浆抽搐高潮视频_久久av小草影院强奸_看久久久一级无码毛片_亚洲a∨无码天堂网

Home > Project information > Project information details
Project information details
Wuding River Shield and Pipe Jacking Project
Zhong Hai Lin   |   2018-04-26   |   views:2950

Wuding River direct push pipe laying project is the key control project of Shaanxi Beijing four-city line, its crossing length is 423m, and the diameter of the pipeline is 1219mm.The main structure of the crossing geologies are fine sand layers, and the radius of curvature is 1500m.

Project picture