These roof-type diamond core bit segments are one of our most popular products. They are favored by core drilling specialists, concrete contractors, tool repair shops, and other organizations for retipping barrels to reduce costs. We have developed different formulas for cutting various construction materials, including granite, marble, concrete, reinforced concrete, and more. The roof design on the top helps locate the drilling position and makes it easier to start drilling.
We offer different sizes of roof segments for retipping core drill bits ranging from 30mm to 500mm in diameter. Other sizes can be customized. Some standard sizes are in stock and ready for immediate delivery.
The following is our standard core bit segment size and its corresponding relationship with the core drill bits. Please check it for reference. Custom sizes can also be provided upon request.
| Designed Diameter for Core Drill Bits | Suitable Diameter for Core Drill Bits | Core Bit Segment Size |
| D35mm | D32-D36mm | 16×3.0×10mm |
| D44mm | D38-D48mm | 16×3.0×10mm |
| D60mm | D52-D66mm | 24×3.5×10mm |
| D76mm | D68-D82mm | 24×3.5×10mm |
| D96mm | D84-D108mm | 24×3.5×10mm |
| D140mm | D110-D150mm | 24×4.0×10mm |
| D180mm | D160-D200mm | 24×4.5×10mm |
| D228mm | D202-D254mm | 24×4.5×10mm |
| D280mm | D260-D300mm | 24×5.0×10mm |
| D350mm | D305-D400mm | 24×5.5×10mm |
| D450mm | D405-D500mm | 24×5.5×10mm |
