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[China]
Trade Verify
Address: 65 EAST XINHUAN ROAD, SHANGHAI, CHINA
Contact name:Bill, George, Michael
ROSCHEN GROUP |
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Verified Suppliers
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NTW Core Barrel Completely 3 meters Length for Wireline Core barrel Drilling
CORE BARRELS, BITS, RODS, CASING AND TOOLS
Roschen offers a variety of high quality coring drilling systems
which include core barrels, core diamond drill bits, drill rods,
casings and more.
Surface & Underground double tube thin wall wire line core
barrels are used in select mineral exploration applications. Using
thinner walled cross sections for rods, tubes and diamond bit kerfs
creates a larger core sample within nominal 'A' and 'B' bore holes.
The design allows for ease of use with clear water common in
underground environments or less dense drilling additives when
required, and are typically chosen for more competent ground
conditions and for use with high speed drills having lower pull
down forces.
| Boart Longyear Core Barrel System Sizes | ||
| SIZE | CORE Ø | HOLE Ø |
| AQTK | 35.5 mm (1-3/8 in) | 48 mm (1-7/8 in) |
| BQ | 36.4 mm (1-7/16 in) | 60 mm (2-3/8 in) |
| BQTK | 40.7 mm (1-5/8 in) | 60 mm (2-3/8 in) |
| NQ | 47.6 mm (1-7/8 in) | 75.7 mm (3 in) |
| NQTK (NQ2") | 50.6 mm (2 in) | 75.7 mm (3 in) |
| NQ3 | 45 mm (1-3/8 in) | 75.7 mm (3 in) |
| HQ | 63.5 mm (2-1/2 in) | 96 mm (3-3/8 in) |
| HQ3 | 61.1 mm (2-3/8 in) | 96 mm (3-3/8 in) |
| PQ | 85 mm (3-3/8 in) | 122.6 mm (4-7/8 in) |
| PQ3 | 83 mm (3-1/4 in) | 122.6 mm (4-7/8 in) |
| Core Barrel System Sizes | ||||
| SYSTEM | CORE Ø | HOLE Ø | ||
| mm | in | mm | in | |
| A | 48,0 | 1.89 | 27,0 | 1.06 |
| B | 59,9 | 2.36 | 36,4 | 1.43 |
| N | 75,7 | 2.98 | 47,6 | 1.88 |
| H | 96,1 | 3.78 | 63,5 | 2.5 |
| P | 122,6 | 4.83 | 85,0 | 3.35 |
