Brochures & Spec Sheets

SBU-DS Spec Sheet

The small diameter Double Shield TBM (SBU-DS) is ideal for long tunnels (up to 3 km) without intermediate access. The SBU-DS, in diameters from 2.2 to 3.0 m (88 to 118 inches) is a manned-entry, hard rock tunnel boring machine.

 

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