On May 19, 2021, the world's first largest cross-section rectangular hard rock pipe jacking machine "Tianfei 1" was delivered offline. This pipe jacking machine will be applied to the railway related embedded project of Putian railway station. It is also the first difficult project in China where multiple large cross-section rectangular pipe jacking pass through the operating railway at the same time. ——Customized Milling Head Mounted On The World's Largest Pipe Jacking Machine
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