Engineered to meet stringent tolerances for research institutions, defense contractors, and specialized manufacturing plants across South Korea.
Known as the Silicon Valley of South Korea, Daejeon hosts Daedeok Innopolis—a massive concentration of government research institutes, private R&D centers, aerospace agencies, and advanced defense manufacturers. Operating in this technological capital requires drilling solutions that go far beyond standard utility specifications.
Daejeon's aerospace research and defense production lines demand extreme-heat resistant drill bits capable of penetrating Titanium alloys (Ti-6Al-4V), Inconel 718, and Carbon Fiber Reinforced Polymers (CFRP) with zero structural delamination and strict dimensional consistency.
With South Korea leading global memory and microelectronics manufacturing, Daejeon-based equipment vendors require micro-drilling bits featuring sub-micron grain tungsten carbide and runout accuracy below TIR < 0.003mm to craft high-density PCB tooling and gas distribution plates.
Urban development and underground transit expansions across Daejeon Metro Area dictate heavy-duty SDS Plus, SDS Max, and Diamond core drilling tooling capable of boring through reinforced high-MPa concrete, granite aggregates, and structural steel beams effortlessly.
We deliver tailored flute profiles, specialized PVD coatings, and OEM packaging to match your precise engineering specs.
ABOUT US: Established in 2018 with the aspiration of becoming a leading supplier in the hardware and cutting tools industry from its very inception. Over the years, through our unwavering pursuit of quality and sharp market acumen, we have amassed extensive export experience. Today, our products have successfully entered numerous markets including Europe, the United States, South Korea, Australia, and the Middle East, earning widespread recognition and trust from customers globally.
Our team of trained and professional personnel have many years experiences dealing with managing the process of design, quoting and expediting projects of all sizes. Rigorous double quality control ensures every order destined for Daejeon and global markets delivers unmatched performance.
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To support high-tech industrial operations in Daejeon, our drill bit manufacturing process incorporates premium grade metallurgy and advanced surface treatments engineered for prolonged tool life under high friction and thermal load.
| Substrate Material | Hardness Rating (HRC / HV) | Recommended Coating | Target Industrial Application in Daejeon |
|---|---|---|---|
| HSS M2 (High-Speed Steel) | HRC 63 - 65 | Bright Finish / Black Oxide / TiN | General engineering steels, copper, aluminum alloys, and routine maintenance work. |
| HSS-Co M35 (5% Cobalt) | HRC 66 - 68 | TiAlN / Amber Oxide Finish | Stainless steel (304/316), high-tensile structural steels, cast iron, and heat-resistant alloys. |
| HSS-Co M42 (8% Cobalt) | HRC 68 - 70 | AlTiN Nano-composite | Aerospace grade Nimonic alloys, Titanium structural elements, and hard plastic composites. |
| Micrograin Tungsten Carbide | HV 1600 - 1800 | nACo Titanium Aluminum Nitride | CNC high-speed milling, hardened die steel drilling (>HRC 55), and mold components. |
| PCD (Polycrystalline Diamond) | HV > 8000 | CVD Synthetic Diamond Film | Non-ferrous materials, high-silicon aluminum, carbon fiber, and glass-reinforced polymers. |
Eliminates the need for center-punching and reduces thrust force by up to 40%. Crucial for automated CNC machining centers operating in Daejeon’s advanced smart factories to prevent bit walking and tool breakage.
Parabolic flute geometry combined with ultra-smooth surface polishing accelerates chip evacuation, drastically reducing heat buildup during deep-hole drilling cycles in tough alloy steels.
Our product line is extremely rich and diverse. Metal drill bits and other metal-working tools can meet the high-precision requirements of all kinds of metal cutting. Drill bits specifically designed for stone, concrete, tiles, and glass provide reliable support for the construction and decoration industries. Power tool chisels feature excellent performance and durability. Wood drill bits are suitable for all types of woodworking projects. Screw driver bits, nut socket drivers, etc., offer convenient and efficient operation. In addition, we have a variety of saw blades such as TCT circular saw blades and jig saw blades, as well as hole saws, annular cutters, diamond tools, and end mills, ensuring a comprehensive range of offerings.
HSS M2, M35 Cobalt, Carbide Tipped, and Step Drills designed for high performance.
High-torque S2 and Cr-V magnetic driver bits built for automated assembly lines.
Bi-metal, TCT, and Diamond beveling bits for sheet metal, tiles, and heavy pipes.
Our advantages are remarkable. Strict double quality control ensures that every product meets high standards. Our efficient operating model makes our products highly competitive in price. The strong production capacity of our partner factories guarantees fast delivery.
We boast a well-trained and experienced professional team. From the creative conception of product design, to accurate and reasonable quoting, and then to the efficient progress of projects, every link is meticulously controlled.
Explore our full range of high-efficiency drill bits and industrial accessories available for bulk supply in Daejeon and worldwide.
Procuring high-precision drill bits for enterprise applications in South Korea requires strict adherence to international standardizations and seamless logistics integration.
Our drill bits are manufactured in alignment with KS B 3241 (Twist Drills), DIN 338, DIN 340, and ANSI standards. Whether your facility in Daejeon requires metric or imperial sizing, our CNC grinding lines maintain strict dimensional concentricity and pitch accuracy to fulfill exact blueprint drawings.
We provide tailored surface treatments specifically suited to your operational environments—including TiN (Gold), TiAlN (Black/Violet), Bright Polished, and Steam Oxide (Black). Laser branding with your localized product codes and customized bulk blister or plastic box packaging are available.
Understanding the fast-paced production cycles in Daedeok Innopolis, we maintain streamlined export routes with low lead times. Bulk shipments dispatched to Incheon or Busan ports can be expedited to Daejeon manufacturing plants with scheduled blanket-order deliveries.
Every shipment undergoes spectrographic raw material inspection, Rockwell hardness testing, and optical tool dynamic balancing audits. Complete batch test certificates (MTC) are supplied upon request to verify metallurgical purity and hardness consistency.
Find quick answers to common engineering, procurement, and technical queries regarding drill bit selection and custom factory sourcing.
M35 Cobalt drill bits contain 5% Cobalt content, which significantly elevates red-hardness—the ability of the cutting edge to retain hardness and sharp geometry at elevated temperatures exceeding 600°C. This property is indispensable when drilling through heat-treatable stainless steel, Inconel, and titanium alloys commonly specified in Daejeon’s aerospace and defense manufacturing sectors.
Left-hand drill bits feature reverse flute geometry that rotates counter-clockwise. When used in reverse drilling mode on broken studs, seized screws, or damaged fasteners, the friction and left-hand torque created by the cutting tip often unscrews the damaged fastener without damaging the host thread—saving significant downtime in factory equipment overhaul.
Our standard MOQ for standard HSS and Cobalt drill bit sizes starts at 1,000 pieces per diameter. For customized drill bit sets, specialized PVD coatings, or custom laser logo branding tailored to your Daejeon brand distribution, MOQs are flexible depending on packaging design and tool dimensions.
We execute a rigorous double quality control process. First, automated optical sorting checks flute symmetry, overall length, and lip height relief angles. Second, manual sampling tests hardness (HRC), coating thickness via X-ray fluorescence, and destructive drilling cycle limits on certified test blocks before final export packaging.
TiAlN (Titanium Aluminum Nitride) or AlTiN (Aluminum Titanium Nitride) coatings are ideal for high-speed machining and dry drilling conditions. Under high thermal load, these coatings generate an outer layer of aluminum oxide that acts as a thermal barrier, enabling faster RPMs and longer tool life compared to traditional TiN coatings.
Yes. We manufacture SDS Plus and SDS Max concrete bits featuring solid or cross-type tungsten carbide tips in custom working lengths up to 1200mm, optimized for deep foundation anchor installation and heavy infrastructure projects across Daejeon and Korea.
Contact our senior technical sales team today for fast factory-direct quotes, engineering consults, or custom sample requests.
Dongze Hardware