Thin Wall Btw Ntw Htw Wireline Double Tube Core Barrel Assembly Head Assembly Conventional Drilling
Thin Wall BTW NTW HTW wireline double tube core barrel assembly head assembly Conventional Drilling
Wire-line drill tools can lift drill core from dril rods without picking up bits .All the tools include principal parts of the drill tools . overshot assembly ,drill rods , holding dog, circle wrench and etc. Their advantage are higher penetration , higher core recovery ratio ,longer bit life and lower lab intensity ,and the advantages get more clear with the increasing of hole depth .
| No. | Std. | Item | Bit Std. | Reamer Std. | Bit OD(mm) | Bit ID(mm) |
| TW Series | ||||||
| 1 | ATW | 1.5M double tube core barrel | ATW | ATW | 47.6 | 30.1 |
| 2 | BTW | 1.5M double tube core barrel | BTW | BTW | 59.5 | 42.0 |
| 3 | NTW | 1.5M double tube core barrel | NTW | NTW | 75.3 | 56.1 |

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