The CWDC Rooftop core drill bits are laser welded by the advanced Dr. Fritsch full-automatic laser welding machine, which ensures the Rooftop segments achieve high welding strength.
The available sizes of laser welded Rooftop core drills are from 1 '' (25mm) to 14''(350mm) in size.
The core drill is used for professionally wet drilling different hardness of concrete, reinforced concrete.
Rooftop 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
Drilling Application
Applications: drilling concrete, reinforced concrete, asphalt-over concrete with superior efficiency.
| Item No. | Diameter | Segment Height | Arbor | Effective Length |
| CWDC02545010 | 25mm | 10 | 11/4"-7 | 450mm |
| CWDC03245010 | 32mm | 10 | 11/4"-7 | 450mm |
| CWDC03645010 | 36mm | 10 | 11/4"-7 | 450mm |
| CWDC04245010 | 42mm | 10 | 11/4"-7 | 450mm |
| CWDC05245010 | 52mm | 10 | 11/4"-7 | 450mm |
| CWDC06245010 | 62mm | 10 | 11/4"-7 | 450mm |
| CWDC06645010 | 66mm | 10 | 11/4"-7 | 450mm |
| CWDC07245010 | 72mm | 10 | 11/4"-7 | 450mm |
| CWDC07645010 | 76mm | 10 | 11/4"-7 | 450mm |
| CWDC08245010 | 82mm | 10 | 11/4"-7 | 450mm |
| CWDC09245010 | 92mm | 10 | 11/4"-7 | 450mm |
| CWDC10245010 | 102mm | 10 | 11/4"-7 | 450mm |
| CWDC11245010 | 112mm | 10 | 11/4"-7 | 450mm |
| CWDC12745010 | 127mm | 10 | 11/4"-7 | 450mm |
| CWDC13245010 | 132mm | 10 | 11/4"-7 | 450mm |
| CWDC15245010 | 152mm | 10 | 11/4"-7 | 450mm |
| CWDC16245010 | 162mm | 10 | 11/4"-7 | 450mm |
| CWDC17245010 | 172mm | 10 | 11/4"-7 | 450mm |
| CWDC18245010 | 182mm | 10 | 11/4"-7 | 450mm |
| CWDC20045010 | 200mm | 10 | 11/4"-7 | 450mm |
| CWDC25045010 | 250mm | 10 | 11/4"-7 | 450mm |
| CWDC30045010 | 300mm | 10 | 11/4"-7 | 450mm |
| CWDC35045010 | 350mm | 10 | 11/4"-7 | 450mm |
Manufacturing Process and Quality Control
Dr. Fritsch Automatic Laser Welding Process
Core Drill Barrel Inspection, Core Drill Bits Safety Bending Test
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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