Core Barrels
Core Barrels, Wireline Core Barrels BQ HQ NQ PQ Used for Mining, Geological Drilling
Roschen Group Limited manufactures a wide assortment of Core Barrels for geotechnical and mineral exploration applications. Our Core Barrels are manufactured using the tightest tolerances to ensure safe, efficient operation as well as a high rate of core sample recovery.
In addition to the industry-standard assembly, we offer options to customize most sections of the core barrel.
Core Bits, Reaming Shells, Overshots and other Coring Tools are also available.
Available Core Barrel Types:
Wireline: AWL, BWL, NWL, NWL-2 HWL, PWL
Triple Tube: BWL-3, NWL-3, HWL-3, PWL-3
Conventional: BV, NV, NV-2, HV, PV, NWD4
DCDMA: WM, WG
2-3/4” x 3-7/8”, 4" x 5-1/2", 6" x 7-3/4"
| Core sizes: |
| Double tube surface |
| Size(surface exploration drill) |
Metric system(mm) |
Imperial system(in) |
| Hole diameter |
Core diameter |
Hole diameter |
Core diameter |
| BQ |
60 |
36.4 |
2.36 |
1.43 |
| NQ |
75.7 |
47.6 |
2.98 |
1.88 |
| HQ |
96.1 |
63.5 |
3.78 |
2.5 |
| PQ |
122.7 |
85 |
4.83 |
3.34 |
| Triple tube surface |
| NQ3 |
75.7 |
45 |
2.98 |
1.78 |
| HQ3 |
96.1 |
61.1 |
3.78 |
2.41 |
| PQ3 |
122.7 |
83 |
4.83 |
3.27 |
| 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 |
For more information, please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ; http://www.roschendrill.com
http://www.roschenmining.com ; http://www.roschendrilling.com
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