The crown core drill bits are laser welded by the advanced Dr. Fritsch full-automatic laser welding machine, which ensures the crown segments achieve high welding strength.
The available sizes of laser welded crown core drills are 16mm,20mm,22mm,24mm,28mm,32mm,35mm.
The core drill is used for professionally wet drilling different hardness of concrete, reinforced concrete.
Crown segment design achieves the sharp and fast drilling performance.
Segments height, working length and connection type can be customized according to your requirement.
Features of Diamond Core Drill Bits
1) Laser welded technology.
2) Segment welding strength guaranteed in drilling works.
3) High quality 20# seamless steel barrel
4) Good control in Dynamic balance during rotation
5) Sharp and fast drilling speed with stable long lifespan
6) Different Quality level to choose
Application
For drilling reinforced concrete,concrete and masonry
Specification
| Diameter | Crown Segment | Effective Length | Thread |
| 10mm | 12x2.0mm | 300/350mm | 1/2"BSP |
| 12mm | 12x2.5mm | 300/350mm | 1/2"BSP |
| 14mm | 12x2.5mm | 300/350mm | 1/2"BSP |
| 15mm | 12x2.5mm | 300/350mm | 1/2"BSP |
| 16mm | 12x2.5mm | 300/350mm | 1/2"BSP |
| 18mm | 12x2.5mm | 300/350mm | 1/2"BSP |
| 20mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 22mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 24mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 25mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 26mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 28mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 30mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 32mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 33mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 35mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 38mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 40mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 42mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
| 45mm | 12x2.5mm | 350/400/450mm | 1/2"BSP; 1-1/4" UNC |
Quality Control
Basic parameter measurements and Breakdown testing
Corediam Introduction
Corediam Tools Co., Ltd., as a high-tech enterprise, concentrates on researching & developing manufacturing and marketing diamond tools industry. We have the most extensive, innovative and powerful range of diamond tools for construction, stone and DIY markets. Corediam strives to be the leading professional supplier in the world through technology innovation.
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