Durable Long life AQ BQ NQ HQ PQ PCD diamond core drill bits
I. Use
Durable Long life AQ BQ NQ HQ PQ PCD diamond core drill bits 
It used in the laboratory or field for cutting core samples from hard material such as rock asphalt and concrete.
II. Feature
1. High quality, smooth cutting without chip, reduce the stone waste
2. Universal dry/wet cutting for granite, marble, sandstone, concrete, asphal/ bituminous pavement, limestone, lavastone etc..
3. Soft to hard bonds designed for cutting hard to soft materials
4. Sandwich or grooved segment with any shapes for single or multi-blade as required.
5. Reasonably priced with excellent service and consistent quality.
6. Guarantee fast smooth cutting on each stone.
7. Drill rig machine sandstone/PDC AQ BQ NQ HQ PQ PCD diamond core drill bits.
III. Standard size
| Core Barrel Designation | Outside Set Diameter | Inside Set Diameter | ||||||
| Maximum | Minimum | Maximum | M inimum | |||||
| Inch | mm | Inch | mm | Inch | mm | Inch | mm | |
| AQ | 1.88 | 47.75 | 1.87 | 47.5 | 1.067 | 27.1 | 1.057 | 26.85 |
| BQ | 2.35 | 59.69 | 2.34 | 59.44 | 1.438 | 36.52 | 1.428 | 36.27 |
| NQ | 2.97 | 75.44 | 2.96 | 75.19 | 1.88 | 47.75 | 1.87 | 47.5 |
| HQ | 3.77 | 95.76 | 3.755 | 95.38 | 2.505 | 63.63 | 2.495 | 63.38 |
| PQ | 4.815 | 122.3 | 4.795 | 121.8 | 3.35 | 85.09 | 3.34 | 84.84 |
III. Company Product
1. Drying, weighing and Grading Equipment and tools.
2. Soil, Rock Testing Equipment.
3. Aggregate Testing Equipment.
4. Concrete Testing equipment.
5. Cement and Mortar Testing Equipment.
6. Asphalt Bitumen Testing Equipment.
7. Steel Testing Equipment.
8. Survey Instrument and Detector.
9. General Lab Equipment and Tools.
10. Scientific Lab Equipment and Tools.
IV. Our services
1. Production:
Our factory choose high quality material include steel, stainless steel, circuit board, motor, etc. By strict and efficient production and inspection, products are in high quality and possible low cost.
2. Shipment:
We use 9mm and 15mm thick plywood as packing, heavy machine will be packed in high strength to keep it intact during shipment. We ship goods out from company in shortest time and book fast ship to make sure customer can get goods quickly.
3. After sales:
After shipment, we will delivery shipping documents to customer correctly and quickly. Supply one year warranty for all machines, after one year, we will still supply quick and effective after sales solution.
1. Drying, weighing and Grading Equipment and tools.
2. Soil, Rock Testing Equipment.
3. Aggregate Testing Equipment.
4. Concrete Testing equipment.
5. Cement and Mortar Testing Equipment.
6. Asphalt Bitumen Testing Equipment.
7. Steel Testing Equipment.
8. Survey Instrument and Detector.
9. General Lab Equipment and Tools.
10. Scientific Lab Equipment and Tools.
IV. Our services
1. Production:
Our factory choose high quality material include steel, stainless steel, circuit board, motor, etc. By strict and efficient production and inspection, products are in high quality and possible low cost.
2. Shipment:
We use 9mm and 15mm thick plywood as packing, heavy machine will be packed in high strength to keep it intact during shipment. We ship goods out from company in shortest time and book fast ship to make sure customer can get goods quickly.
3. After sales:
After shipment, we will delivery shipping documents to customer correctly and quickly. Supply one year warranty for all machines, after one year, we will still supply quick and effective after sales solution.