Zhuzhou Delong Metal Materials Processing Co., Ltd.
| Type | Drill |
| Application | Metal drilling |
| Coating | Titanium, Tin, or Cobalt |
| Suitable For | High-speed drilling |
| Flute Type | Spiral |
| Cutting Direction | Right hand |
| Usage | Handheld or machine |
| Shank Type | Straight |
| Material | Carbide |
| Size | Various sizes available |
| Features | High hardness, wear resistance, heat resistance |
| Manufacturer | Various brands available |
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Product Specification
| Type | Drill | Application | Metal drilling |
| Coating | Titanium, Tin, or Cobalt | Suitable For | High-speed drilling |
| Flute Type | Spiral | Cutting Direction | Right hand |
| Usage | Handheld or machine | Shank Type | Straight |
| Material | Carbide | Size | Various sizes available |
| Features | High hardness, wear resistance, heat resistance | Manufacturer | Various brands available |
| High Light | D10 Tungsten Carbide Drill Bit ，60 deg Center Outlet Drill Bit ，Internal Cooling Tungsten Drill Bit | ||
Product description
The 5D Ultra-Hard Internal Cooling Tungsten Carbide Drill Bit (Size Range: 8.1–10.0mm, D10 Shank, 61mm flute length, 103mm overall length) is specially engineered for high-performance, high-efficiency deep-hole drilling in tough materials. Featuring a 60° center outlet and unique "fried dough twists" spiral flute geometry, this drill ensures fast chip evacuation, excellent centering, and minimal tool wear even in demanding conditions.
Crafted from ultra-fine grain tungsten carbide and enhanced with internal coolant channels, this drill delivers superior hardness, thermal resistance, and prolonged cutting life — ideal for automated CNC machining centers and precision metal drilling applications.
Ultra-Hard Tungsten Carbide: Offers exceptional hardness and wear resistance for long tool life.
Internal Coolant Design: Dual internal channels for efficient cooling, reducing heat buildup and tool wear.
Fried Dough Twists Helix Flute: Innovative twisted flute design enhances chip evacuation and minimizes clogging.
60° Center Outlet Tip: Promotes accurate centering and reduced deflection in deep-hole drilling.
5D Depth Ratio: Capable of drilling to 5 times the diameter, ideal for deeper hole applications.
Precision Ground Shank (D10): Ensures optimal alignment and vibration reduction during high-speed operation.
| Parameter | Value |
|---|---|
| Drill Diameter | 8.1–10.0 mm |
| Shank Diameter | D10 |
| Flute Length | 61 mm |
| Overall Length | 103 mm |
| Drilling Depth | 5D (5× diameter) |
| Tip Geometry | 60° Center Outlet |
| Flute Type | Twisted Helix (“Fried Dough Twists” Style) |
| Material | Ultra-Hard Tungsten Carbide |
| Coolant | Internal Cooling Channels |
| Application | Deep hole drilling in hard and stainless steels, cast iron, alloys |
Automotive Industry: Precision drilling of hardened steel components and engine blocks.
Mold & Die Manufacturing: High-accuracy hole making in alloyed tool steels.
Aerospace Components: Drilling structural parts with strict tolerance requirements.
CNC Machining Centers: Continuous, automated high-speed drilling with reliable tool life.
General Engineering: Deep-hole drilling in stainless steel, carbon steel, and composite alloys.
Company Details
Business Type:
Manufacturer
Year Established:
2018
Total Annual:
300-600
Employee Number:
>200
Ecer Certification：
Verified Supplier
Zhuzhou Delong Metal Material Processing Co., Ltd. was established in 2018 and is located in Zhuzhou City, Hunan Province, China's largest hard alloy production base. We are a high-tech enterprise specializing in metal material processing and manufacturing, committe... Zhuzhou Delong Metal Material Processing Co., Ltd. was established in 2018 and is located in Zhuzhou City, Hunan Province, China's largest hard alloy production base. We are a high-tech enterprise specializing in metal material processing and manufacturing, committe...
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