2007
Established Plant Foundation
12,000 m²
Fully Ground Facility Area
90M+
Annual Bit Output Capacity
4.7 / 5.0
Intertek Verified Rating
Export Solutions
High-Performance Tooling for Heavy Fabrication
Engineered for endurance in stainless steels, sheet metal enclosures, and composite assemblies. Fully customizable under private OEM/ODM contracts.
Localized Industrial Applications Across the Lille Metropole
The Métropole Européenne de Lille (MEL) and the larger Hauts-de-France administrative cluster represent an epicenter of European rail construction, advanced automotive manufacturing, electrical enclosure fabrication, and commercial logistics infrastructure. For mechanical engineers, electrical contractors (électriciens industriels), and metal fabricators (chaudronniers) across Villeneuve-d'Ascq, Roubaix, and Tourcoing, step drill bits are essential for rapid, single-operation drilling, enlarging, and deburring thin-gauge materials.
Unlike standard twist drills that prone to grabbing or distorting thin sheet metals below 4.0 mm thickness, industrial-grade multi-step drill bits manufactured from M2 (HSS 6542) and M35 Cobalt (5% Co) create clean, concentric, cylindrical penetrations. They eliminate sheet distortion in HVAC ductwork, chassis panels, control cabinets, and stainless architectural claddings common to modern European green building renovations.
Electrical & Switchgear Cabinets
Standardized to metric conduit knockouts (PG7 through PG21, and ISO M12 to M40). Facilitates vibration-free drilling through mild steel and junction box polymer casings without cracking thin profiles.
Rail Rolling Stock & Automotive
Hauts-de-France is France’s primary rail cluster. Our split-point 135° M35 step bits cut high-strength low-alloy (HSLA) sheet steels and structural aluminum frames with low heat buildup and zero runout.
HVAC & Architectural Metalwork
Dual-flute spiral step designs clear heavy chips automatically. Ideal for spiral ductwork, heat pump metal housings, and roofing gutters where clean deburring is vital to meet French NF safety codes.
Technical Whitepaper
Material Metallurgy & Cutting Geometry
A reference engineering guide for sourcing specialists matching substrate hardness to high-speed steel metallurgy and PVD coatings.
| Substrate / Grade | Hardness Rating | Recommended Coatings | Target Substrates | Feed / Speed Guidance |
|---|---|---|---|---|
| HSS 4241 | 60 - 62 HRC | Bright / Black Oxide / TiN | Mild steel (<200 HB), Aluminum, PVC, Wood | High RPM, moderate constant feed; requires standard cutting lubricant. |
| HSS M2 (6542) | 63 - 65 HRC | Titanium Nitride (TiN), Amber | Carbon steel, alloy steel, structural brass, brass | Balanced peripheral speed; exceptional wear resistance for volume fabrication. |
| HSS M35 (Co 5%) | 65 - 67 HRC | TiAlN (Titanium Aluminum Nitride) | Inox 304/316, Titanium alloys, wear plates | Lower RPM, heavy constant downfeed to prevent work-hardening inox layers. |
| Spiral vs. Straight Flute | Dual-Ground CNC | Self-Centering 118° / 135° | Sheet thickness 1.0 mm to 5.0 mm | Spiral flutes ensure smoother torque transitions between step diameter increments. |
Factory Backing
Manufacturer Direct Advantage: Jiangsu WRD Tools
Operating since 2007 from China’s premier cutting tool cluster in Danyang, Jiangsu, we deliver verified industrial consistency directly to global procurement desks.
Intertek Onsite Audited
Verified physical premises, rigorous raw material incoming spectroscopy, and in-line QA processes approved by Intertek testing teams.
Integrated Heat Treatment
Automated multi-stage salt bath and vacuum furnace quenching ensure optimal core toughness and Rockwell hardness uniformity along flute margins.
OEM Tier-1 Capability
Trusted supplier pedigree providing private-label programs for global tool leaders including Milwaukee, BOSCH, DeWalt, and Makita.
High-Tech Enterprise
Recognized High-Tech Enterprise of Jiangsu Province since 2019, deploying 5-axis CNC flute grinding machines for consistent cut geometry.
Procurement Clarifications
Frequently Asked Questions by Lille Buyers
Essential trade details covering shipping, metallurgy selections, DIN tolerances, and packaging customization for European importers.
Q1: How do your step drill bits withstand stainless steel (Inox 304/316) applications?
For stainless machining common to Northern French food processing, chemical, and maritime operations, we prescribe our M35 Cobalt (5% Co) or custom M42 step bits treated with a multi-layer TiAlN coating. This coating withstands operating thermal loads up to 800°C without oxidizing, preventing tool breakdown.
Q2: What are the standard lead times and shipping routes to Hauts-de-France?
Production runs generally range between 25 to 35 days depending on private-label packaging complexity. Sea shipments depart direct from Shanghai or Ningbo ports, discharging at Le Havre, Antwerp, or Rotterdam, reaching Lille warehouses within 28–35 transit days.
Q3: Can you produce step drill bits matching non-standard metric increments?
Yes. Our in-house CNC tool grinding workshops engineer custom step progressions, unique land heights, three-flat shanks, or quick-release 1/4" hex shanks to match exact European engineering drawings or OEM catalog specs.
Q4: What private labeling and packaging options are available?
We provide comprehensive branding: permanent laser-etching of your brand logo and step sizing on the shanks, custom plastic indexing cases, double-blister cards with multilingual French/English inserts, and retail-ready counter displays.
Q5: What are the standard Minimum Order Quantities (MOQ)?
Standard bulk-packaged step drill bits start at 100 to 500 pieces per size. Custom-printed blister sets or bespoke metal-case assortments generally have an entry threshold of 1,200 sets, allowing cost-competitive container loadings.
Q6: How do you guarantee concentricity and step-diameter accuracy?
Every production batch undergoes automated optical comparator checks and precision runout testing to confirm tolerances within ±0.05 mm, strictly complying with DIN industry standards for smooth tool engagement.
Request OEM Pricing & Specification Sheets
Connect directly with our engineering and export trade directors. We review technical drawings, arrange sample verification batches, and provide landed DDP/FOB cost breakdowns within 24 business hours.
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