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China's largest-diameter drilling machine 16.07 meters diameters Tianhe Yunhe put into use in Beijing
China's self-developed largest-diameter slurry tunnel boring machine (TBM) Yunhe
https://www.globaltimes.cn/page/202108/1231468.shtml
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https://www.globaltimes.cn/page/202108/1231468.shtml
China's largest-diameter drilling machine Yunhe put into use in Beijing
www.globaltimes.cnChina's self-developed largest-diameter slurry tunnel boring machine (TBM) Yunhe started to bore at the East Sixth Ring Road Reconstruction project in suburban Beijing.