Since the establishment of the Diamond Division in 1998, we have embarked on the manufacture of impregnated diamond bits. After five years of research, testing, and development into production methods, raw materials, and sintering (metal bond) of products from both domestic and international manufacturers, we have successfully commercialized the diamond layer, which is essential for impregnated bits. Currently, as a pioneering product of core bits, we receive tremendous support. We also accept orders for singles, casings, etc.
Used nationwide in Japan and overseas, our Corepack Tube has received high acclaim for enabling the collection of cores from soft soil to gravel layers to soft rock to ultra-hard rock that are close to their natural state. It has grown into a trusted product. We offer models and cutting-edge parts that reliably enable core sampling from continuous geological strata and various types of rock.
Varieties of core tube for geological surveys, diamond bit, double, triple, special soft requirements, driving
Suitable for soft to medium-hard rock (fracture zone) types
S type
SLIM type (PDF 850KB)
NEW S type
TRIPLE type
| Standard | Outer Diameter | Core Diameter | 1.0M | 1.5M | 2.0M | SM Switch | RS Switch | Suitable Strata | |
|---|---|---|---|---|---|---|---|---|---|
| S | 66S | 66 | 45 | Yes | Yes | Caution | Yes | - |
(Usable with mud) Soft Soft Soil Hard Soil Soft Rock Medium-Hard Rock Hard Rock Fractured Zone |
| 76S | 76 | 55 | Yes | Yes | Caution | Yes | Yes | ||
| 86S | 86 | 65 | Yes | Yes | Caution | Yes | Yes | ||
| 116S | 116 | 92 | Yes | Caution | Caution | Yes | Yes | ||
| SLIM | 66SLIM | 66 | 48 | Yes | Yes | Caution | Yes | Yes | |
| 86SLIM | 86 | 68 | Yes | Yes | Caution | Yes | Yes | ||
| NEW S | 66NEW S | 66 | 45 | Yes | - | - | Yes | - | |
| 76NEW S | 76 | 55 | Yes | - | - | Yes | Yes | ||
| 86NEW S | 86 | 65 | Yes | - | - | Yes | Yes | ||
| 116NEW S | 116 | 92 | Yes | - | - | Yes | Yes | ||
| TRIPLE | 76TRIPLE | 76 | 55 | Yes | - | - | Yes | Yes | |
| 86TRIPLE | 86 | 65 | Yes | - | - | Yes | Yes | ||
| 100TRIPLE | 100 | 75 | Yes | - | - | Yes | Yes | ||
| 116TRIPLE | 116 | 88 | Yes | - | - | Yes | Yes | ||
| R | 66R | 66 | 50 | Caution | Yes | Yes | - | Yes |
(Freshwater Only) Hard Rock Fracture Zone Very Hard Rock |
| 76R | 76 | 60 | Caution | Yes | Yes | - | Yes | ||
| 86R | 86 | 68 | Caution | Yes | Caution | - | Yes | ||
| REX | 66REX | 66 | 50 | Caution | Yes | Yes | - | Yes | |
| RN | 66RN | 66 | 50 | Caution | Yes | Yes | - | Yes | |
| "Uchikomi" | "65 Uchikomi" | 65 | 50 | Yes | Caution | - | - | - |
Medium-Hard Layer Weak Soft Soil |
| "85 Uchikomi" | 85 | 68 | Yes | Caution | - | - | - | ||
| "Bunkatsu Kun 65" | 65 | 48 | Yes | - | - | - | - | ||
| "Uchikomi PRO" | 65 | 50 | Yes | Caution | - | - | - |
We have prepared PDF data of the Corepack product brochure for you.
Please feel free to download and use it.
