| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | GB/T |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Comprehensive Size Coverage - This 12-piece set includes 1-13mm drill bits in 1mm increments, offering precise sizing flexibility for various hole diameters-perfect for workshop, repair, and industrial applications.
High-Precision Construction - Each bit features accurately ground tips and flutes for stable, low-vibration drilling, ensuring smooth cutting performance and reduced material deformation.
Thermally Hardened for Durability - Made from 6542 high-speed steel, the bits undergo advanced heat treatment to achieve excellent hardness, maintaining sharp cutting edges even under heavy-duty use.
Versatile Drilling Solution - Ideal for metal fabrication, equipment maintenance, and multi-material drilling, this all-in-one set is designed to handle carbon steel, cast iron, aluminum, and more.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
Precision-Ground Cutting Edges - Each bit in the 6542 HSS set is finely ground to ensure fast, clean penetration with minimal pressure, maintaining long-term edge sharpness across various metal types.
Accurate Entry Point Design - Fully ground straight shanks and tips enhance alignment and reduce slippage during the start of drilling, improving positioning accuracy in workshop and industrial use.
Optimized Spiral Flute Geometry - Designed for efficient chip evacuation, the spiral grooves prevent clogging and reduce heat buildup, supporting smoother, continuous drilling operations.
Durable Surface Treatment - The refined exterior finish not only adds resistance to wear and corrosion, but also ensures a sleek, professional appearance ideal for workshop use.
Comfortable Handling and Control - Each bit is balanced and easy to grip, reducing operator fatigue during repetitive drilling tasks, making the set ideal for both daily operations and long-duration projects.
Available Sizes:
| Specification | Cutting Diameter | Overall length | Blade length |
| 1.5 | 18mm | 40mm | 1.5mm |
Built for Industrial Durability - Manufactured from high-quality 6542 high-speed steel, this drill set is engineered to handle continuous, high-load drilling with excellent resistance to wear and heat.
Versatile Material Application - Designed to cut through carbon steel, stainless steel, aluminum, wood, and plastics, offering flexibility for both industrial and general-purpose use.
Consistent Professional Results - Precision-ground tips and optimized flute geometry deliver stable, accurate drilling, making the set ideal for machine shops, repair stations, and DIY projects alike.
1. Precision Manufacturing Equipment
CNC Ground Accuracy - Each drill bit is processed with high-precision CNC grinding to ensure uniform flute geometry and tip angles for stable and repeatable performance.
Vacuum Heat Treatment - Achieves optimal hardness distribution, enhancing the tool's ability to withstand continuous high-speed drilling.
Ultra-Fine Polishing - Reduces friction and improves chip evacuation, protecting both the tool and the workpiece.
2. Advanced Steel Purification
EAF + LF + VD + RS ESR Technology - Produces ultra-clean 6542 HSS, minimizing impurities and increasing toughness, reducing the chance of breakage or edge chipping.
3. Comprehensive Heat Treatment Cycle
Combines quenching, cryogenic processing, and tempering, achieving hardness up to HRC 67 while maintaining flexibility to avoid micro-cracking-ideal for hard metal applications.
4. Enhanced Cutting Edge with RS ESR Solidification
The Rapid Solidification ESR process improves abrasive particle distribution, enhancing thermal resistance and wear stability-especially beneficial for deep or continuous hole drilling.
5. Flexible Custom Production Options
Supports various HSS grades (e.g., M2, M35, M42) for different machining needs.
Offers customization in flute length, helix angle, and coatings (TiN, TiAlN, etc.) for application-specific optimization.
Precision Flute Design - Tailored for consistent chip removal and minimal heat buildup across all 12 sizes (1-13mm).
Material-Specific Geometry - Drill tips and helix angles are optimized for use on carbon steel, stainless steel, and non-ferrous metals.
Adaptable Coating Options - Compatible with protective coatings to further extend lifespan in industrial settings.
Q1: What materials and coatings are available for your straight-shank twist drills?
Materials: We offer various types of high-speed steel, including standard HSS (e.g., M2, M35), cobalt HSS (HSS-Co), and powder metallurgy HSS (PM-HSS). This particular set is made from 6542 HSS, a premium-grade high-performance steel.
Coatings: Available options include TiN (general-purpose), TiAlN (for high-temperature resistance), and TiCN (for high hardness). Uncoated custom versions are also available.
Note: The right coating can extend tool life by 2-3 times, especially when drilling tough materials like stainless steel or titanium alloys.
Q2: What causes premature wear or breakage during drilling?
Operational issues: Excessive feed rates or insufficient cooling (always use cutting fluid) can lead to rapid tool wear or breakage.
Selection errors: For hard materials like stainless or hardened steel, cobalt or coated drills are recommended over standard HSS.
Support: We provide technical support and replacement service for defects not caused by misuse.
Q3: How can I tell when a drill bit needs to be replaced?
Signs include:
Increased burrs during drilling
Abnormal cutting noise or vibration
Hole diameter deviation greater than 0.1 mm
Tip: Regularly inspect the cutting edge with magnification to check for chipping or rounding.
Q4: How do I select the correct helix angle?
30°-35° (Standard Helix): Suitable for carbon steel, alloy steel, and cast iron
40°-45° (High Helix): Best for soft materials like aluminum and copper; improves chip evacuation
10°-20° (Low Helix): Ideal for hardened or heat-treated steel to reduce vibration and improve stability
Q5: Can you provide custom or non-standard drill designs?
Yes. We offer full customization for non-standard drills, including:
Internal coolant holes (drawings required)
Step drills
Multi-flute or special-edge geometry designs
Customized solutions are available for unique applications or high-volume production requirements.
){kind=link}