Global Leading Diamond Tool Manufacturer.
Johnson Tools OD25-700mm Wet Diamond Hole Saw Drilling Bit for Concrete & Reinforced Concrete
Specifications:
Diameter: 25-700mm
Working Length: 450mm
Connection: 1-1/4"UNC
Technology: Laser Weldeding
Color：Color or as your request
Segment type: Normal/Turbo/Mesh Turbo segment
Cutting Materials: Concrete and Reinforced Concrete
Operating Conditions: Wet Use
Execute heavy-duty engineering projects with confidence using the Johnson Tools Wet Diamond Core Drill Bit. Covering an extensive range from 25mm to 700mm, these bits are engineered for professional drilling in Reinforced Concrete, Hard Stone, and Masonry. Whether for installing small plumbing pipes or large ventilation shafts, our bits deliver speed, safety, and longevity.
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PRODUCT ADVANTAGES
Our customer service team is a dedicated, hard-working group specially selected for their enthusiasm and commitment to providing excellent customer service. They offer advice, answer any queries.
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PRODUCT PARAMETER
| Diameter(mm) | Thickness(mm) | Length（mm） | Conector | Teeth No |
| 12mm | 1.5 | 450 | 1-1/4" | 1 |
| 14mm | 1.5 | 450 | 1-1/4" | 1 |
| 16mm | 1.5 | 450 | 1-1/4" | 1 |
| 18mm | 1.5 | 450 | 1-1/4" | 1 |
| 20mm | 1.5 | 450 | 1-1/4" | 1 |
| 22mm | 2.0 | 450 | 1-1/4" | 2 |
| 25mm | 2.0 | 450 | 1-1/4" | 3 |
| 28mm | 2.0 | 450 | 1-1/4" | 4 |
| 32mm | 2.0 | 450 | 1-1/4" | 4 |
| 36mm | 2.0 | 450 | 1-1/4" | 4 |
| 38mm | 2.0 | 450 | 1-1/4" | 4 |
| 42mm | 2.0 | 450 | 1-1/4" | 4 |
| 52mm | 2.0 | 450 | 1-1/4" | 5 |
| 57mm | 2.0 | 450 | 1-1/4" | 5 |
| 62mm | 2.0 | 450 | 1-1/4" | 6 |
| 67mm | 2.0 | 450 | 1-1/4" | 6 |
| 72mm | 2.0 | 450 | 1-1/4" | 7 |
| 77mm | 2.0 | 450 | 1-1/4" | 7 |
| 82mm | 2.0 | 450 | 1-1/4" | 8 |
| 92mm | 2.0 | 450 | 1-1/4" | 8 |
| 102mm | 2.0 | 450 | 1-1/4" | 9 |
| 107mm | 2.0 | 450 | 1-1/4" | 9 |
| 112mm | 2.0 | 450 | 1-1/4" | 10 |
| 117mm | 2.0 | 450 | 1-1/4" | 10 |
| 122mm | 2.0 | 450 | 1-1/4" | 10 |
| 127mm | 2.0 | 450 | 1-1/4" | 10 |
| 132mm | 2.0 | 450 | 1-1/4" | 11 |
| 142mm | 2.0 | 450 | 1-1/4" | 11 |
| 152mm | 2.0 | 450 | 1-1/4" | 12 |
| 162mm | 2.0 | 450 | 1-1/4" | 12 |
| 172mm | 2.0 | 450 | 1-1/4" | 13 |
| 182mm | 2.0 | 450 | 1-1/4" | 13 |
| 200mm | 2.0 | 450 | 1-1/4" | 15 |
| 225mm | 2.5 | 450 | 1-1/4" | 16 |
| 230mm | 2.5 | 450 | 1-1/4" | 16 |
| 250mm | 2.5 | 450 | 1-1/4" | 17 |
| 276mm | 3.5 | 450 | 1-1/4" | 19 |
| 300mm | 3.0 | 450 | 1-1/4" | 21 |
| 350mm | 3.0 | 450 | 1-1/4" | 23 |
| 400mm | 3.0 | 450 | 1-1/4" | 25 |
| 450mm | 3.0 | 450 | 1-1/4" | 28 |
| 500mm | 3.0 | 450 | 1-1/4" | 32 |
| 550mm | 3.0 | 450 | 1-1/4" | 36 |
| 600mm | 3.0 | 450 | 1-1/4" | 40 |
FAQ
Q1: Why choose laser-welded diamond core drill bits for reinforced concrete?
A: Laser-welded diamond core drill bits provide strong segment bonding and better safety during wet drilling. They are especially suitable for reinforced concrete, heavy-duty construction drilling, and applications where the bit may encounter rebar. Compared with brazed core bits, laser-welded bits are a better choice for demanding jobsite conditions.
Q2: What materials can this wet diamond core drill bit cut?
A: This core drill bit is mainly designed for concrete, reinforced concrete, brick, masonry, and similar construction materials. For hard concrete, abrasive concrete, or concrete with heavy rebar, we can recommend a suitable segment type and bond formula.
Q3: Can this core drill bit drill through rebar?
A: Yes, this wet diamond core drill bit can be used for reinforced concrete drilling where the bit may encounter rebar. However, drilling through heavy rebar may reduce drilling speed and increase segment wear. We can recommend a suitable segment type and bond formula according to the rebar content and concrete condition.
Q4: Why is wet drilling recommended?
A: Wet drilling helps cool the segments, remove slurry, reduce dust, and improve drilling stability. It is strongly recommended for reinforced concrete and large-diameter core drilling to achieve better performance and longer tool life.
Q5: How do I choose the right diameter and working length?
A: The core drill diameter should be selected according to the required hole size, such as for pipes, cables, anchors, or ventilation openings. The working length should be chosen based on the drilling depth. Our standard working length is 450mm, and other lengths can be customized if deeper drilling is required.
Q6: Is the 1-1/4" UNC connection compatible with my core drilling machine?
A: Yes. 1-1/4" UNC is a common connection for professional core drilling machines and is suitable for many major drilling rig brands. If your machine uses a different connection, please share your machine model or thread requirement, and we can check whether customization is available.
Q7: Can the color, connector, or specification be customized?
A: Yes. We can customize the paint color, connector type, working length, segment type, and other specifications according to customer requirements. OEM logo and private label service are also available for distributors and professional tool brands.
Q8: Can I order samples or small quantities for testing?
A: Yes. Trial orders are available for customers who want to test drilling performance before bulk purchasing. Please share the required diameter, working length, connection type, and drilling material, and we will recommend a suitable specification for testing.
Q9: What information should I provide for a quotation?
A: To quote the correct core drill bit, please provide:
- Diameter
- Working length
- Connection type, such as 1-1/4" UNC
- Drilling material, such as concrete or reinforced concrete
- Wet or dry drilling condition
- Machine brand and power
- Required quantity
- OEM requirements, such as color, logo, or packaging
This helps us recommend the suitable segment type, bond formula, and price.
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