Its 5-inch hex auger drives 1.2 million pounds of thrust and 126,000 lb.-ft. ... McLaughlin WH 175 auger boring machine can install casings from 16 to 42 inches in diameter. A 175-horsepower Volvo ...

China has completed the production of its largest tunnel-boring machine (TBM), measuring ... in the industrialization of 16-meter-class, large-diameter tunnel boring technology in China.