China researchers produce TBM Cutter Ring higher quality than Germany
...., Ltd together project "Super-hard rock wear-resistant hob cutter ring technology research and development...rial, use digital steelmaking technology. Smelt [O]≤9ppm, [N]≤64...perfect cutter ring." China Railway Engineering Equipment Grou...Watch Excavation 'super shield' to bore first train tunnel under Yangtze River in Shanghai, China
https://www.youtube.com/watch?v=_Ffz--go7sI A giant boring-machine shield, designed to excavate a 7.74km...the new Chongming metro line in Shanghai https://www.scmp.com/video/china/3192624/excavation-super-shie...China Railway 22nd Bureau and CRCHI build Qiangguo is largest Slurry Tunnel Boring Machine in China
People inform "Qiangguo" is super large (13.27 meter) diameter Slurry TBM. China Railway 22nd Bureau and China Railway Construction Heavy Industry Co., Lt...t arrive at project on November 20. TBM has many technology advancements. Very precise at...
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