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| Categories | Core Bits |
|---|---|
| Brand Name: | Aoxing |
| Model Number: | Nmlc Hmlc |
| Certification: | ISO9001 |
| Place of Origin: | Hebei,China |
| MOQ: | 1 Piece |
| Supply Ability: | 300 Piece/Month |
| Model NO: | NMLC HMLC |
| Length: | A B N H P S |
| Type: | Core Drill Bit |
| Material: | Diamond |
| Usage: | Deep Hole Hard Rock Core Drilling |
| Specification: | NMLC HMLC |
| Origin: | China |
| Company Info. |
| Hengshui Aoxing Geological Equipment Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Nmlc Hmlc Double Diamond Core Bits
1. Impregnated Diamond Bit: Special mental coated diamonds to extend the diamond working life.
| No. | Std. | Item | OD*ID(mm) | Crown Height | SN. |
| 1 | NMLC | diamond bit | 75.3*52.0 | C6 C9 C12 | K3 K5 K7 K9 |
| 2 | HMLC | diamond bit | 98.8*63.5 | C6 C9 C12 | K3 K5 K7 K9 |
| 1 | AWG | diamond bit | 47.6*30.1 | C6 C9 | K3 K5 K7 K9 |
| 2 | BWG | diamond bit | 59.5*42.0 | C6 C9 | K3 K5 K7 K9 |
| 3 | NWG | diamond bit | 75.3*54.7 | C6 C9 | K3 K5 K7 K9 |
| 4 | NWM | diamond bit | 75.3*54.7 | C6 C9 | K3 K5 K7 K9 |
| No. | Std. | Item | OD*ID(mm) | Crown Height | SN. |
| 1 | YP36 | diamond bit | 36.5*21.5 | C6 C9 | K3 K5 K7 K9 |
| 2 | YP47 | diamond bit | 46.5*29.5 | C6 C9 | K3 K5 K7 K9 |
| 3 | JP75 | diamond bit | 75.3*54.5 | C6 C9 | K3 K5 K7 K9 |
| 4 | JP95 | diamond bit | 95.0*63.0 | C6 C9 | K3 K5 K7 K9 |
| 5 | JP110 | diamond bit | 111.0*79.0 | C6 C9 | K3 K5 K7 K9 |
| 6 | JP130 | diamond bit | 131.0*94.0 | C6 C9 | K3 K5 K7 K9 |
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%.
How to choose the hardness of bit
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