Nau (NQ) Impregnated Core Bits Manufacturer in China Diamond Products
| US$80.00 - 160.00 | 1 Piece (MOQ) |
Au-Prospect Drilling Tools(Wuxi)Co., Ltd.
Jiangsu, China
Last Login Date:
Jul 01, 2025
Business Type:
Manufacturer/Factory, Trading Company
Main Products:
Drill Rod, Au Drill Rod, Rau Drill Pipe, Drilling Casing, Diamond Bits, Reaming Shells, Casing Shoes, Drilling Tools, Water Swivel, Core Barrel Assembly
Product Description
Company Info
Basic Info.
Product Description
Bit Matrix No. | Rock Features | Rock Type | Hardness |
A2 | Extremely abrasive,highly fractured | Wear-resistant sandstone, broken wear-resistant sandstone | |
A3 | Medium soft,abrasive,fractured | Broken wear-resistant sandstone, sandy shale, limestone, threshite | |
A4 | Medium soft-hard,abrasive,fractured | Sandy shale, limestone, threshite, gabbro | |
A5 | Medium hard-hard,polishing+mixed | Pyroxene, sorite, gabbro, diabase | |
A6 | Medium hard-hard,polishing+mixed | Threshold, gabbro, diabase, basalt, mica schist | |
A7 | Medium hard-very hard,moderately abrasive | Gabbro, diabase, basalt, mica schist, siltstone, granite | |
A8 | Hard-very hard,polishing | Coarse-grained basalt, mica schist, siltstone, granite, hematite, basalt, hard quartzite | |
A9 | Hard-very hard,slightly abrasive | Hematite, Basalt, Hard Quartzite, Quartz Conglomerate, Strip Iron Ore | |
A10 | Very hard-extremly hard,slightly abrasive | Hard Quartzite, Quartz Conglomerate, Bar Iron Ore, Taconite | |
A12/14 | Extremly hard,non-abrasive,fine grain,very competent | Bar Iron Ore, Taconite, Quartzite | |
A15 | The hardest | Iron cement, quartzite, black silicate | |
HE Series | Mohs Hardness | ROCKFEATURES | ROCK TYPE | Hardness |
HE3 | 3.0-5.5 | Soft | Sandstone,Sandy Shale,Limestone,Sandy Limestone,Conglomerates,Peridotite,Serpentine,Weathered Granite,Dolomite | |
HE5 | 4.0-6.0 | Soft to Medium Hard | Abrasive Coarse-Grained Granite, Basalt,Pegmatite,Skarns,Rhyolite | |
HE7 | 5.0-6.5 | Medium to Hard | Granite,Pegmatite,Skarns,Rhyolite,Jasperite,Glassy Quartz,Basalt | |
HE9 | 6.0-7.5 | Hard to Very Hard | Granite,Syenite,Quartz,Diorite,Gneiss,Silicified Volcanics,Diabase,Gabbro,Quartz,Chert,Basalt | |
HE11 | 6.5-7.5 | Hard to Extremely Hard | Basalt, Felsic,Volcanic Rock,Diorite,Silicified Volcanics,Quartz,Quartz,Chert | |
HE13 | 7.0-8.0 | Hardest | Calcite,Quartzite,Taconite | |
| Type | Bits | |||
| O.D | I.D | |||
| Imperial | Metric | Imperial | Metric | |
| BTW | 2.345 | 59.56 | 1.667 | 42.1 |
| NTW | 2.965 | 75.31 | 2.218 | 56.1 |
| HTW | 3.762 | 95.57 | 2.809 | 71.1 |
| AWL(AQ) | 1.875 | 47.63 | 1.062 | 26.97 |
| BWL(BQ) | 2.345 | 59.65 | 1.433 | 36.4 |
| BWL-3(BQ3) | 2.345 | 59.65 | 1.32 | 33.53 |
| NWL(NQ) | 2.965 | 75.31 | 1.875 | 47.63 |
| NWL-3(NQ3) | 2.965 | 75.31 | 1.775 | 45.08 |
| HWL(HQ) | 3.762 | 95.57 | 2.5 | 63.5 |
| HWL-3(HQ3) | 3.762 | 95.57 | 2.406 | 61.11 |
| PWL(PQ) | 4.805 | 122.05 | 3.345 | 84.96 |
| PWL-3(PQ3) | 4.805 | 122.05 | 3.27 | 83.06 |
| Type | Reaming Shells | |
| O.D | ||
| Imperial | Metric | |
| BTW | 2.36 | 59.95 |
| NTW | 2.98 | 75.7 |
| HTW | 3.783 | 96.09 |
| AWL(AQ) | 1.89 | 48.01 |
| BWL(BQ) | 2.36 | 59.95 |
| BWL-3(BQ3) | 2.36 | 59.95 |
| NWL(NQ) | 2.98 | 75.7 |
| NWL-3(NQ3) | 2.98 | 75.7 |
| HWL(HQ) | 3.783 | 96.09 |
| HWL-3(HQ3) | 3.783 | 96.09 |
| PWL(PQ) | 4.828 | 122.65 |
| PWL-3(PQ3) | 4.828 | 122.65 |
| Type | Casing Shoes | |||
| O.D | I.D | |||
| Imperial | Metric | Imperial | Metric | |
| AW | 2.345 | 59.56 | 1.9 | 48.26 |
| BW | 2.965 | 75.31 | 2.37 | 60.2 |
| NW | 3.615 | 91.82 | 2.992 | 76 |
| HW(CDDA) | 4.625 | 117.48 | 3.925 | 99.7 |
| HW(DCDMA) | 4.625 | 117.48 | 3.975 | 100.97 |
| HWT(CDDA) | 4.625 | 117.48 | 3.925 | 99.7 |
| HWT(DCDMA) | 4.625 | 117.48 | 3.975 | 100.97 |
| PW | 5.653 | 143.58 | 4.855 | 123.3 |
| PWT | 5.653 | 143.58 | 4.855 | 123.3 |
| 56mm | 2.205 | 56 | 1.85 | 47 |
| 76mm | 2.992 | 76 | 2.638 | 67 |
| 86mm | 3.386 | 86 | 3.031 | 77 |
| 101mm | 3.976 | 101 | 3.445 | 87.5 |
| 131mm | 5.157 | 131 | 4.646 | 118 |
| Type | Rod Shoes | |||
| O.D | I.D | |||
| Imperial | Metric | Imperial | Metric | |
| BWL(BQ) | 2.345 | 59.56 | 1.78 | 45.21 |
| NWL(NQ) | 2.965 | 75.31 | 2.37 | 60.2 |
| HWL(HQ) | 3.615 | 91.82 | 2.992 | 76 |
| PWL(PQ) | 4.75 | 120.66 | 3.985 | 101.22 |
Before placing order, here is some infomation we'd like to know:
How deep is the project?
What is the rock?
Is it hard, soft or complex rock?
Is the rock very complete, semi-broken or broken?
How is the abrasiveness of rock?
Have you use any other brand before? what is the brand(optional)?
How is the performance previously?
Such as:
Drilling speed?
Meters downhole?
Drill bit working life?
Above questions will help us be more familar with your ground situation, meantime, more accurate and appropriate bit will be provided to you.
Suggestions:
SOFT ROCK FORMATIONS
LOW RPM's
Large diamonds/cutters
Large waterways for better flushing and higher GPM flow rates
Hard matrix for longer bit life
HARD ROCK FORMATIONS
High RPM's
Small diamonds/cutters
Small waterways
Soft matrix to expose more cutting elements
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