Shandong Tianyou Tunnel Engineering Equipment Co., Ltd. provides the first 9-meter diameter TBM+shield tunneling machine in China with complete sets (blue and yellow cutting tools) to land on Hunan TV

Author：PV：269 Time：2023-09-01

Next： China Railway Construction Bridge Bureau Guangzhou Line 18-22, Division 6, Double Line Departure in Sha Shi District, with Tianyou providing all the cutting tools and tail brushes, achieved a good result of 2347 meters without changing the cutting tools a Prev： Tiejian Heavy Industry successfully lowered the 15m level cutting tool into the well, initially installed Tianyou cutting tools, and successfully excavated Tianyou Xingsheng

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