Diamond Core Drills
Your Professional Diamond Core Drills Supplier
(Nanjing) Abrasives Mfg. Inc. is a professional manufacturer specializing in abrasive wheels, diamond tools, and TCT cutting tools. Our products are widely used in metal processing, construction materials, automotive manufacturing, and industrial cutting applications. With stable product quality, strict quality control, and export experience, we provide reliable cutting and grinding solutions for customers worldwide.
Rich Industry Experience
With over two decades of manufacturing and export experience, we understand different market requirements and provide stable products for global industrial applications.
Strict Quality Control
Our factory uses advanced production equipment and a complete quality management system to ensure consistent performance, durability, and reliable product quality.
Professional Technical & Export Support
Our experienced team provides product selection guidance, customized solutions, export logistics coordination, and responsive after-sales technical support for international customers.
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Diamond Core Drills for AsphaltFast, Clean Asphalt Cores / No Clog, Continuous Cutting / Built Tough for Repeated Jobsread more
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Diamond Core Drills for ConcreteFast, Clean Asphalt Cores / No Clog, Continuous Cutting /Built Tough for Repeated Jobsread more
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Diamond Core Drills for StoneSmooth, Jam Free Drilling / Steady, Accurate Positioning / Fast, Clean Stone Coresread more
Parameter
|
Material |
Diamond |
|
Drill type |
Core Drill Bit |
|
Finish |
diamond |
|
Color |
Custom |
|
Customized support |
OEM, ODM |
Size Chart
|
Diamteter(mm) |
Length(mm) |
Segment Dimensions(mm) |
Segments Number |
|
22 |
150 |
13x3.0x8/10 |
3 |
|
25 |
150 |
13x3.0x8/10 |
3 |
|
28 |
150 |
17x3.0x8/10 |
3 |
|
30 |
150 |
17x3.0x8/10 |
3 |
|
32 |
150 |
17x3.0x8/10 |
3 |
|
38 |
150 |
20x3.5x8/10 |
3 |
|
42 |
150 |
24x3.5x8/10 |
3 |
|
52 |
150 |
24x3.5x8/10 |
3 |
|
65 |
150 |
24x3.5x8/10 |
4 |
|
78 |
150 |
24x3.5x8/10 |
4 |
|
82 |
150 |
24x3.5x8/10 |
4 |
|
89 |
150 |
24x3.5x8/10 |
4 |
|
102 |
150 |
24x4.0x8/10 |
5 |
|
107 |
150 |
24x4.0x8/10 |
5 |
|
117 |
150 |
24x4.0x8/10 |
5 |
|
127 |
150 |
24x4.0x8/10 |
6 |
|
152 |
150 |
24x4.0x8/10 |
7 |
|
162 |
150 |
24x4.0x8/10 |
7 |
|
182 |
150 |
24x4.0x8/10 |
8 |
|
202 |
150 |
24x4.0x8/10 |
10 |
Advantages of Diamond Core Drills
Minimal Mess
In comparison to alternative drilling methods, diamond drills cut through hard construction surfaces without leaving dust and debris all over the place. This saves making a mess and wasting precious time.
Maintain Structural Integrity
The idea of drilling into buildings creates fears of damaging structural integrity. However, diamond core drilling is one of the safest drilling forms, ensuring that structural integrity remains intact.
Precision
You are most likely to get the perfect results you desire with a diamond drill, as it is one of the most precise methods of cutting, leaving every project with an accurate finish.
Versatility
Diamond drills can be used on many different construction surfaces. Due to their portability and compact design, you are not limited in the locations and materials you can use to cut.
Lightweight
Diamond core drills have a lightweight and compact design that doesn’t affect their immense power and seamless performance. This makes them super easy to transport.
Applications of Diamond Core Drills
Plumbing and Electrical Conduit Installation
Diamond core drilling is ideal for creating perfectly sized holes for plumbing lines and electrical conduit runs. Whether the job calls for vertical, horizontal, or angled drilling, this method allows contractors to place pipes and conduit exactly where needed without damaging surrounding concrete.
HVAC Systems
HVAC installations often require multiple penetrations through concrete walls, floors, or ceilings for ductwork, refrigerant lines, or drainage pipes. Core drilling provides a clean and accurate solution for these cutouts, even in confined or awkward spaces.


Road and Bridge Construction
In heavy infrastructure work, diamond core drilling is frequently used to take concrete core samples, install structural anchors, or create utility openings in bridges, roads, and overpasses.
Utility Penetrations in Concrete Slabs and Walls
From water mains to telecom lines, utilities often need to pass through thick concrete barriers. Core drilling offers a non-invasive way to make those openings with precision, reducing vibration and structural impact.
Common Mistakes to Avoid When Diamond Core Drills
Drilling with the Wrong Diamond Core Drill Bit
At the beginning of our list, it is worth noting that there are many different types of drill bits for different purposes including diamond core drill bit, twist bit, spade bit, hole saw, glass bit, screwdriver bits.
Mistakes at Setting the Drilling Speed for Diamond Core Bit
Once you've chosen the correct core drill bit type, the operating speed shouldn't be a concern. The drilling speed of various materials changes for diamond drill bit. The drilling bit's drilling principle is the capability to glaze over materials' surfaces, removing a little piece of the material body with diamond core drill bit..
Allowing Overheating of Core Bit While Drilling
One of the most crucial pieces of rigid material (high speed) drilling is temperature regulation for diamond core drill bit. As a result, allowing the core bit or drill to overheat can cause the entire operation to shut down.
Failure to Use Lubricant/Using the Wrong Lubricant
Any surface that is subjected to a robust diamond drilling process generates a lot of heat. The tooling, diamond core drill bit, could be damaged as a result of the heat generated. Oil-based lubricants are an alternative, but diamond core bit drilling may not be suitable.
Covering Ventilation Holes During Drilling with Diamond Core Drill Bit
While core drilling, ventilation holes must be left open. Shutting them out while core drilling would be a massive mistake with your diamond core drill bit. Overheating is one of the most common side effects of covering ventilation holes during core drilling process.
Not Cleaning the Core Drill Bit After Drilling
The key to a long-lasting drilling equipment is proper maintenance. The length of your drill's rope is the first factor to consider on while drilling with core drill bit properly. If the cord of diamond core drill bit is really not long enough, you'll need to use an extension cord to get the rest of the way.
Diamond core drills are capable of cutting through:
- Reinforced concrete
- Granite and natural stone
- Asphalt
- Glass and ceramics
- Porcelain and tiles
- Advanced composites

Ordering Process

Inquiry - Quotation - Communication - Order confirming - Deposit payment - Production - Testing and debugging - Balance payment - Packing - Delivery - Customer receiving - After service.
Packaging and Shipping
|
Packaging |
Aluminum coated bag, plastic box, tin and Pallet package |
|
Shipping |
Shipping by sea, by air, by express are acceptable. According to your requirements. |
Our Factory



Our Service
Pre-sale
Professional technical advisors communicate one-on-one with customers, based on the customer's processing materials, equipment models, and process requirements, recommending suitable products or custom solutions.
During-sale
Provide product usage guidance and installation and commissioning suggestions to ensure that customers can quickly get started.
Post-sale
Establish a complete after-sales service system. During the product warranty period, if there are quality issues, free returns and exchanges are provided, and at the same time, technical consultation, maintenance and other continuous support are offered.
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As one of the leading diamond core drills manufacturers and suppliers in China, we also support customized service. Please rest assured to wholesale bulk high quality diamond core drills for sale here from our factory. For price consultation, contact us.
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