| Standard DTH System Model | Connection | Suitable for | Casing Type | Application |
|---|---|---|---|---|
Single Pass Model  |
Thread | Soft ground Shallow hole | Permanent | Piling Construction |
Normal Model  |
Thread | Heavy duty Deep Hole | Permanent | Piling Construction Water Well / Geothermal |
Multi Use Model  |
Inter Linked | Re-Using | Retrievable / Temporary | Anchoring, Foundation |