The CWDB turbo core drill bits are laser welded by the advanced Dr. Fritsch full-automatic laser welding machine, which ensures the segments achieve high welding strength.
The available sizes of laser welded turbo core drill are from 1 '' (25mm) to 14''(350mm) in size.
The core drill is used for professionally wet drilling different hardness of concrete, reinforced concrete.
Turbo segment design achieves the sharp and fast drilling performance.
Segments height, working length and connection type can be customized according to your requirement.
Description
Corediam manufactures high-performance diamond core drill bits engineered for professional drilling applications. Meantime the diamond core drill bits have different segment types.
• Laser welded diamond core drill bits
• Turbo segment
• For reinforced concrete
• Diameter: 102mm
• Effective length: 450mm
• Connection: 1 1/4" UNC
Our core drill bits deliver:
Fast drilling speed
Stable drilling performance
Long service life
Clean and accurate holes
Application
Applications: drilling concrete, reinforced concrete, asphalt-over concrete with superior efficiency.
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


Specification of Laser Welded Diamond Core Drill Bits
| Item No. | Diameter | Segment Height | Arbor | Effective Length |
| CWDB02545010 | 25mm | 10 | 11/4"-7 | 450mm |
| CWDB03245010 | 32mm | 10 | 11/4"-7 | 450mm |
| CWDB03645010 | 36mm | 10 | 11/4"-7 | 450mm |
| CWDB04245010 | 42mm | 10 | 11/4"-7 | 450mm |
| CWDB05245010 | 52mm | 10 | 11/4"-7 | 450mm |
| CWDB06245010 | 62mm | 10 | 11/4"-7 | 450mm |
| CWDB06645010 | 66mm | 10 | 11/4"-7 | 450mm |
| CWDB07245010 | 72mm | 10 | 11/4"-7 | 450mm |
| CWDB07645010 | 76mm | 10 | 11/4"-7 | 450mm |
| CWDB08245010 | 82mm | 10 | 11/4"-7 | 450mm |
| CWDB09245010 | 92mm | 10 | 11/4"-7 | 450mm |
| CWDB10245010 | 102mm | 10 | 11/4"-7 | 450mm |
| CWDB11245010 | 112mm | 10 | 11/4"-7 | 450mm |
| CWDB12745010 | 127mm | 10 | 11/4"-7 | 450mm |
| CWDB13245010 | 132mm | 10 | 11/4"-7 | 450mm |
| CWDB15245010 | 152mm | 10 | 11/4"-7 | 450mm |
| CWDB16245010 | 162mm | 10 | 11/4"-7 | 450mm |
| CWDB17245010 | 172mm | 10 | 11/4"-7 | 450mm |
| CWDB18245010 | 182mm | 10 | 11/4"-7 | 450mm |
| CWDB20045010 | 200mm | 10 | 11/4"-7 | 450mm |
| CWDB25045010 | 250mm | 10 | 11/4"-7 | 450mm |
| CWDB30045010 | 300mm | 10 | 11/4"-7 | 450mm |
| CWDB35045010 | 350mm | 10 | 11/4"-7 | 450mm |
Wet Core Bits For Reinforced Concrete Test Overview
Product:
102mm turbo segment Wet Diamond Core Drill
Material:
C45 concrete
Reinforcement:
23mm Rebar × 2
Method:
Wet drilling
Equipment:
hand-held drilling machine
Result:
• Stable drilling through reinforce concrete
• Fast drilling
• Slow wear of segment
• Smooth hole finish
| Test Item | Result |
| Drilling speed | 150s |
| Hole depth | 200mm |

What Does This Test Prove?
This test demonstrates the wet core bits ability to maintain stable drilling performance when drilling reinforced concrete containing 25mm steel reinforcement.

Core Drill Barrel Inspection
OEM & Private Label Diamond Tools
Corediam provides OEM and private label services for diamond tools, helping distributors, wholesalers, importers and tool brands create products under their own brand name.
1. Private Label & Product Branding
Printing/laser engraving logo & product specifications on the core bits
2. Customized Product Packaging
Corediam can provide different packaging options according to your product and market requirements.
• Custom color boxes
• Product labels
• Barcode and QR code labels
3. OEM product customization
• Diameter and dimensions
• Effective length of core bits
• Steel core types
FAQ
What materials can diamond core drill bits drill?
Diamond core drill bits are designed for reinforced concrete, concrete, brick, masonry and stone drilling applications.
What is the difference between wet and dry diamond core drill bits?
Wet core bits use water cooling for longer drilling performance, while dry core bits are designed for convenient handheld drilling without water.
Can you customize diamond core drill bits?
Yes. Corediam provides customized diameter, length, segment types and packaging solutions.
Do you supply OEM diamond core drill bits?
Yes. We support private label production for distributors and tool brands.
Who Is Diamond Core Drill For?
With years of experience in manufacturing professional diamond tools, Corediam supplies high-performance drilling solutions to distributors, importers, contractors, and OEM brands across global markets. Our advanced production capabilities, rigorous quality control, and flexible customization services enable customers to build reliable product lines while meeting the demands of construction, flooring, and stone-processing industries.
Corediam Tools are designed for building contractors, drilling professionals, diamond tool distributors, and OEM brands that need reliable drilling performance in concrete and reinforced concrete.
Talk to our specialists about your specific project requirements, and we’ll help you select the right diamond core drill bits for concrete,heavily reinforced concrete.
Inquiry
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