Real projects, real ground conditions. This section documents where Topdrill DTH hammers and bits have been put to work — foundation piling, mining, water wells, and deep drilling projects across more than 100 countries. Each reference covers the site conditions, the equipment configuration chosen, and the results measured in the field. If you are evaluating large-diameter DTH equipment for a similar project, these case studies show what to expect before you commit.
Natural rock varies too much for a fair hammer comparison. TOPDRILL cast 145 MPa UHPC cylinders, buried them, and drilled them with the same rig and compressor — only the hammer changed.
We Built the Hard Rock Ourselves Read More »
Ø1,000 mm large diameter DTH bit face, dust-covered after drilling hard abrasive gabbro
Hard Rock Lets You Plant Shallower — If You Can Drill It Read More »
![[Photo ③] Site overview. Barge, crawler crane and tug working against the rock shoreline, with land-section piles already standing.](https://topdrill.org/wp-content/uploads/2026/08/20240201_112442-1024x768.jpg)
A 15 mm clearance is routine on solid ground. Holding it from a barge in a tidal channel is not. Field notes from 20 offshore piles in Korea.
At one of the largest semiconductor fab construction sites in Korea — the Yongin cluster — thousands of PHC piles must reach firm bearing strata before a single structure rises above ground. Topdrill supplied DTH hammers and drilling tools for this foundation piling work, and the project became a good demonstration of a question we
