LARGE DIAMETER DTH HAMMERING SYSTEM
- Using DTH hammer & bit. - Fast penetration in hard ground formation - Hole diameter up to 600mm ~ 1,500mm |
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1. Guide pipe 2. Ready for Drilling 3. Drilling 4. Cased Hole 5. Hole Cleaning (Surging) 6. H-Beam Inserting 7. Finished Hole |
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