Introduction
If you are looking for a reliable annular cutters manufacturer, you’ve come to the right place. An annular cutter, also known as a mag drill bit or steel plate drill bit, is a specialized cutting tool designed for drilling precise holes in steel and other metals. Compared with traditional twist drills, annular cutters are more efficient, produce smoother holes, and save time and energy.
As a direct factory supplier from China, we provide high-quality annular cutters at competitive prices. With full specifications and non-standard customization available, we are the ideal partner for your drilling tool needs.
Hollow Core Drill Bits from Trusted Chinese Manufacturers: Expert Knowledge and Wholesale Solutions
What is an Annular Cutter?
An annular cutter is a hollow, core-cutting drill bit that removes only the material at the periphery of the hole, leaving a solid core. This design reduces cutting resistance, increases efficiency, and prolongs tool life.
Key advantages of annular cutters include:
- Faster drilling compared to twist drills
- Smooth and burr-free holes
- Lower power consumption
- Extended tool life
Types of Annular Cutters
1. HSS Annular Cutter
Made from high-speed steel (HSS), these cutters are durable and ideal for general-purpose drilling in mild steel and structural steel.
2. Carbide Annular Cutter
Equipped with carbide-tipped cutting edges, these cutters are suitable for hard materials such as stainless steel, alloy steel, and cast iron. They offer excellent wear resistance and longer tool life.
3. Coated Annular Cutter
For enhanced performance, annular cutters can be coated with TiN (Titanium Nitride), TiAlN (Titanium Aluminum Nitride), or other advanced coatings, providing better heat resistance and smoother cutting.
Applications of Mag Drill Bits
Our mag drill bits are widely used in:
- Steel structure fabrication
- Bridge construction
- Shipbuilding
- Machinery manufacturing
- On-site assembly and installation
Wherever precision drilling on steel plates is required, annular cutters are the first choice.
📌 Annular Cutter Sizes Table
Annular Cutters Size Chart
| Diameter (mm) | Diameter (inch) | Common Cutting Depth (mm) | Common Cutting Depth (inch) |
|---|---|---|---|
| 12 | 15/32 | 35 / 50 | 1-3/8″ / 2″ |
| 13 | 33/64 | 35 / 50 | 1-3/8″ / 2″ |
| 14 | 35/64 | 35 / 50 | 1-3/8″ / 2″ |
| 15 | 19/32 | 35 / 50 | 1-3/8″ / 2″ |
| 16 | 5/8 | 35 / 50 | 1-3/8″ / 2″ |
| 17 | 43/64 | 35 / 50 | 1-3/8″ / 2″ |
| 18 | 45/64 | 35 / 50 | 1-3/8″ / 2″ |
| 19 | 3/4 | 35 / 50 | 1-3/8″ / 2″ |
| 20 | 25/32 | 35 / 50 | 1-3/8″ / 2″ |
| 21 | 53/64 | 35 / 50 | 1-3/8″ / 2″ |
| 22 | 7/8 | 35 / 50 | 1-3/8″ / 2″ |
| 23 | 29/32 | 35 / 50 | 1-3/8″ / 2″ |
| 24 | 15/16 | 35 / 50 | 1-3/8″ / 2″ |
| 25 | 1 | 35 / 50 | 1-3/8″ / 2″ |
| 26 | 1-1/32 | 35 / 50 | 1-3/8″ / 2″ |
| 27 | 1-1/16 | 35 / 50 | 1-3/8″ / 2″ |
| 28 | 1-7/64 | 35 / 50 | 1-3/8″ / 2″ |
| 29 | 1-9/64 | 35 / 50 | 1-3/8″ / 2″ |
| 30 | 1-3/16 | 35 / 50 | 1-3/8″ / 2″ |
| … | … | … | … |
| 100 | 3-15/16 | 35 / 50 | 1-3/8″ / 2″ |
Why Choose Our Annular Cutters?
As a professional annular cutter manufacturer in China, we ensure:
- ✅ Factory Direct Supply – no middleman, best price guaranteed
- ✅ High Quality – strict material selection and production standards
- ✅ Full Range of Sizes – from 12mm to 100mm and beyond
- ✅ Customization Service – non-standard sizes available upon request
- ✅ Fast Delivery – stable supply capacity for bulk orders
How to Order Annular Cutters from China?
Ordering from us is simple:
- Send us your inquiry with specifications (diameter, cutting depth, material, coating).
- We provide you with a detailed FOB or CIF quotation.
- Confirm order and arrange production.
- Quality inspection and shipment from the designated Chinese port.
Conclusion
If you are searching for a trusted annular cutter supplier with factory pricing and guaranteed quality, we are your best choice. Our HSS annular cutters and carbide annular cutters are widely used in global markets, helping customers achieve precise and efficient drilling.
📩 Contact us today to get your free quotation and discover why we are a leading annular cutter manufacturer in China.
