nd 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 ure is then subjected to heat treatment assuring the metallurgical bond of the eel blank. To maintain optimal performance during entire bit life, it is important that ynchronized 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,TT56T2 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 /span> | 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,metamorschist,gneiss,granite,basalt |
| 9-10 | andesite,pegmatite,hematite,magnetit,metamorschist,gneiss,granite,basalt,gabbro,rhyolite,diorite |
| 10-11 | magnetit,metamorchist,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 |
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