China Best Carbide Drill Bit Factories & Exporters for the Žilina Market

We provide sea, rail, and air freight arrangements to the Žilina region. For standard volume orders, sea freight departs from Shanghai or Ningbo Port to the Port of Koper (Slovenia) or Port of Hamburg (Germany), followed by bonded rail or truck transit directly to regional Slovak customs hubs (such as Žilina, Bratislava, or Ružomberok), typically taking 28 to 35 days. For time-critical production runs, China-Europe Rail Express via Małaszewice provides an overland transit time of approximately 16 to 20 days. We provide complete commercial invoices, packing lists with detailed HS codes (8207.50 for drill bits, 8207.40 for taps), and EUR.1 assistance where applicable to ensure smooth Slovak customs clearance.

Yes. Every production run undergoes spectrographic metallurgical analysis to verify the composition of tungsten, molybdenum, vanadium, and cobalt (e.g., verifying 4.8% to 5.2% pure cobalt in our M35 series). We supply an EN 10204 3.1 inspection certificate alongside Rockwell hardness (HRC) test charts, concentricity runout reports, and optical comparator flank measurements for each production batch delivered to your warehouse.

For standard DIN 338 twist drill bits in stock bulk packaging, our baseline MOQ begins at 100 to 500 pieces per diameter. For specialized tooling, such as Weldon-shank TCT annular cutters, bi-metal hole saws, and large SDS Max cross-tip concrete drills, the MOQ is 10 to 50 pieces or complete kits. Private-label customized packaging (such as branded blow-mold cases, metal boxes, and retail blister cards) starts at approximately 1,200 sets. We also offer consolidated container loads, allowing distributors to mix metal, wood, and masonry bits in a single shipment.

M35 cobalt high-speed steel contains 5% cobalt, which raises its red-hardness threshold to 620°C while maintaining toughness and shock absorption. It is well-suited for manual drill presses, portable magnetic drills, and standard machining centers where mechanical vibration or slight tool misalignment could cause brittle failure. Solid Tungsten Carbide (VHM) operates at significantly higher cutting speeds (Vc 60–120 m/min compared to Vc 15–25 m/min for M35) and resists temperatures up to 900°C, but requires a rigid CNC setup with minimal spindle runout (<0.005mm) to prevent catastrophic fracturing.

Yes. We provide comprehensive OEM/ODM manufacturing services. Our in-house production lines include high-definition fiber laser marking machines that engrave your custom brand logo, metric diameter, and material grade directly onto drill bit shanks. For retail and professional distribution, we supply customized packaging including dual-material plastic index boxes, heavy-gauge sheet metal cases, transparent hanging quads, and full-color printed display blister packs with multilingual copy (Slovak, German, and English).

We operate automated 5-axis CNC flute grinding machines equipped with diamond dressing wheels and in-process laser gauging systems. Each bit is ground from a solid, pre-heat-treated blank in a single clamping setup, ensuring concentricity between the tool shank and cutting flutes within ±0.002mm. Our QA laboratory conducts SPC (Statistical Process Control) sampling every 30 minutes during production runs to catch grinding wheel wear before tolerances can drift outside DIN specifications.