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Forged Carbon Steel Impregnated Diamond Coring Drill Bit BQ NQ HQ PQ for Coal Mining Drilling Equipment Drilling Rig
Description
Products Description
| Size | Bit O.D.Hole Diameter | Bit I.D.Core Diameter | Reaming Shell O.D. |
| MM | MM | MM | |
| BQ | 58.9 | 36.4 | 59.95 |
| BQ3 | 58.9 | 33.53 | 59.95 |
| NQ | 75.3 | 47.6 | 75.7 |
| NQ3/NQTT | 75.3 | 45.1 | 75.7 |
| HQ | 95.6 | 63.5 | 96.09 |
| HQ3/HQTT | 95.6 | 61.1 | 96.09 |
| PQ | 122 | 85 | 122.65 |
| PQ3 | 122 | 83 | 122.65 |
Waterway: BQ:6.NQ:8.HQ:10.PQ:12
Attention:
1.The difference between the outer diameter of the bit and the reamer should be reasonable,
the outer diameter of the reamer is 0.3-0.5mm larger than the outer diameter of the bit,
and the hard formation should not more than 0.3mm.
2.When the new bit reaches the bottom of the hole light pressure (1/3 of the normal pressure),
slow turn (about 100rimin), and then continue drilling with normal parameters after the initial grinding for 10 minutes.
3.When drilling in soft rock layer, the pressure should be reduced appropriately. When drilling in intact, medium-hard orhard
rock formations, the pressure on bit should be appropriately increased; When drilling in fractured, fractured and heterogeneous
rock formations, the pressure on bit should be appropriately reduced, generally by 25%-50%.
FQA
01:Are you a manufacturer,trading company or a third party?
We are the earliest factory to produce drilling tools which have more than 60years experience.
02:Where is your factory located?How can l get to your factory?
We are in Wuxi City,China,where is near Shanghai,we can pick you up at the airportsor railway stations.
03:lf Iwill need to stay atyour place forfew days,is it possible to bookthe hotelfor me?
It's always our pleasure to book a nice hotel for you.
04:What is your minimum order quantity?
Our MOQ is 1 pc.
05:Can you send me free samples?
We're happy to provide small value free samples at your delivery cost.
06:Can you do customized products?
Yes,we are happy to do customized products if you can provide drawing or samples.
07:Can you do private label,such as put on our logo?
Yes,put on your logo is available.
08:How can I get the after-service &quality guarantee?
We will replace the products by free if the problems were caused by us.If it is themen-made problems,
we may also send the products,however it will be charged.Anyproblems,you may call us directly.
