All Casing Method The carbide bit installed onto the tip and the revolving excavation method enables the construction work free from ground collapse. And also, the high-precision verticality makes construction of large‐bore or great depth with low vibration and noise available.
| Strong points | Large‐bore and great depth |
| Low noise and low vibration | |
| Suitable to hard ground |
■Member of Super Top Association
■Member of CD Association
