CGE Group Wuxi Drilling Tools Co., Ltd.
A leading manufacturer in China for suppling drilling tools for mineral exploration and geotechnical drilling indutries, also the Strategic Partner of Atlas Copco/ Epiroc since the year of 2012 (XZ is
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Wireline Diamond Core Drill Bits For Granite / High Performance Core Drill Bit Geological Drilling NC3
Wedge type NQ bit has a very good fluid evacuation function.
• Helps with the removal of cuttings and debris by flushing the waterways and keeping them free and clean.
Description:
The impregnated diamond bits are manufactured using high quality raw materials for optimum drilling performance. These impregnated bits present a metallic layer impregnated of diamonds on its cutting face. These impregnated bits are made by mixing fine diamonds with a metallic powder called matrix. The mixture is then subjected to heat treatment assuring the metallurgical bond of the matrix on the steel blank. To maintain optimal performance during entire bit life, it is important that matrix wear is synchronized with the diamond wear to ensure exposure of new diamonds with sharp edges.
As to the packing, it is first packaged by cartons, and then put into the plywood case.
Specification:
International Standard:
C series: AC, BC, BC3,NC, NC2, NC3,HC, HC3,PC, PC3
T series:T36,TB56
TT series:TT46,TT56
T2 series: T2 46,T2 56,T2 66,T2 76,T2 86,T2 101
T6 series:T6 76,T6 86,T6 101,T6 116,T6 131,T6 146
B series:B36,B46,,B56,B66,B76,B86,B101,B116,B131,B146
MLC series:NMLC,HMLC
LTK series:LTK48,LTK60
Non-standard also can be made as your requirement.
Application
Our impregnated bits matrices can be selected according to the chart below
| Series Number | Name of Rock |
| 1 | sand, soft shale, chalk, marly shale, med-hard limestone ,salt,frozen soil&ice,soft sandstone,sandy shale,claystone,sandy limestone,soft schist |
| 2-3 | soft shale,chalk,marly shale,med-hard limestone,salt,frozen soil&ice,soft sandstone,sandy shale,claystone,sandy limestone,soft schist,med-hard sandstone,siltstone,alluvial deposits,calcitic limestone |
| 4-5 | claystone,sandy limestone,soft schist,med-hard sandstone,siltstone,alluvial deposits,calcitic limestone,med-hard limestone,hard limestone,hard shale,dolomitic limestone |
| 6-7 | med-hard limestone,hard limestone,hard shale,dolomitic limestone,schist,serpentine,hard & mica schist,siliceous limestone,dolomite,marble,peridotite |
| 7-8 | dolomitic limestone,schist,serpentine,hard & mica schist,siliceous limestone,dolomite,marble,peridotite,andesite,pegmatite,hematite |
| 8 | dolomite,marble,peridotite,andesite,pegmatite,hematite,magnetit,metamorph schist,gneiss,granite,basalt |
| 9-10 | andesite,pegmatite,hematite,magnetit,metamorph schist,gneiss,granite,basalt,gabbro,rhyolite,diorite |
| 10-11 | magnetit,metamorphschist,gneiss,granite,basalt,gabbro,rhyolite,diorite,conglomerate,taconite |
Technical Parameters:
| SIZE | BIT OD Hole Diameter | BIT ID Core Diameter | ||
| inches | mm | inches | mm | |
| AQ | 1.870/1.880 | 47.50/47.75 | 1.057/1.067 | 26.85/27.10 |
| BQ | 2.340/2.350 | 59.44/59.69 | 1.428/1.438 | 36.27/36.53 |
| BQ3 | 2.340/2.350 | 59.44/59.69 | 1.315/1.325 | 33.40/33.65 |
| NQ | 2.960/2.970 | 75.18/75.44 | 1.870/1.880 | 47.50/47.75 |
| NQ2 | 2.960/2.970 | 75.18/75.44 | 1.990/2.000 | 50.65/50.80 |
| NQ3 | 2.960/2.970 | 75.18/75.44 | 1.770/1.780 | 44.96/45.21 |
| HQ | 3.755/3.770 | 95.38/96.00 | 2.495/2.506 | 63.38/63.63 |
| HQ3 | 3.755/3.770 | 95.38/95.57 | 2.401/2.411 | 60.99/61.24 |
| PQ | 4.795/4.815 | 121.80/122.30 | 3.340/3.350 | 84.84/85.09 |
| PQ3 | 4.795/4.815 | 121.80/122.30 | 3.265/3.275 | 82.93/83.19 |