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High Performance 500mm Internal Cooling Carbide Drill Extra Long Twist Drill Bits
US$6.80-198.00
5 Pieces
Sample price:US$10.80/piece.Request sample
Product profile
Customization
AvailableCustomized
CustomizedStandard
GB/TModel NO.
RDSLength
80-525mmType
Deep-Hole Carbide Internal Cooling DrillMaterial
Tungsten CarbideUsage
Metal DrillingTransport Package
Single PackageSpecification
Dia. 3-Dia. 20mmTrademark
DELEVELOrigin
Changzhou JiangsuHS Code
8207709000Production Capacity
2000000/YearKey features
Internal Cooling Design: Optimizes chip removal and reduces heat buildup for extended tool life.
High Customization: Customizable up to 50x diameter length with minimum diameter of 0.6mm.
Premium Raw Materials: 100% original alloy rods from Guhring, Kennametal, and other top brands.
Advanced Coating Options: Available in ALTiN, AlCr-based, TiSiN, and AlCr-Blue for superior hardness.
Wide Specification Range: Diameters D3-D25mm with 3D, 5D, 8D, and 12D length options.
15+ Years Experience: Leading manufacturer with over 15 years in solid carbide cutting tools.
On-Time Delivery: Guaranteed 100% on-time delivery within 15 workdays for all seasons.
Non-Standard Support: Custom production available based on customer drawings or samples.
Company profile

Business Type: Manufacturer/FactoryAverage Response Time: ≤1.72hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CIF
AI-Powered supplier vetting
SummaryCHANGZHOU DELEVEL TOOLS CO., LTD. is a China-based manufacturer/factory specializing in carbide drills, end mills, threading tools, modular tooling, and custom carbide tools. It reports ISO 9001 certification, more than 12 years of carbide-tooling experience, six production lines, six-to-ten R&D engineers, six-to-ten quality-control staff, and annual carbide end-mill output of 600,000 pieces. The supplier supports multiple customization modes, ODM, and OEM services for well-known brands, and reports inventory capability and off-peak lead times within 15 working days. However, written corrective-action and complaint-handling procedures are absent, overseas service infrastructure is limited, and the validity of manufacturing-capacity contracts and quality-assurance status is unknown. Financial-capacity entries are present for 2023–2025, but no sufficient non-monetary evidence establishes financial strength. Customer cases are not specifically documented.
Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company in China. Its listed products and business scope cover carbide and other metal tooling, consistent with a direct manufacturing supplier.
CertificationsThe supplier reports holding ISO 9001 certification for its management system. This is explicit evidence of a formal quality-management certification, although the slices do not provide certificate validity or scope details.
After-Sales capabilityThe supplier has no written procedures or records for corrective and preventive actions or effective complaint handling. It has inventory capability, but no overseas warehouse, showroom, agents, or branches; therefore, the documented after-sales framework is deficient despite some fulfillment support.
R&D capabilityThe supplier reports new products during the past year, ODM availability, and six-to-ten R&D engineers with total R&D experience stated at six-to-ten years. It lacks an available SDK, but the documented product-development and ODM activity supports innovation capability overall.
Production capacityThe supplier operates six production lines, reports 600,000 carbide end mills produced annually, employs six-to-ten quality-control staff, and states off-peak lead times within 15 working days. Inventory capability and a claimed on-time-delivery record further support production execution, although contract status and quality-assurance status remain unknown.
Customization capabilityThe supplier explicitly offers customization from samples, designs, full and minor customization, flexible customization, ODM services, and custom carbide tools. Its stated specialization in non-standard carbide tools and technical support directly supports strong customization capability.
Product Q&A
Q:What is the maximum customization length for these drills?
A:
These drills can be customized up to 50 times the diameter length.
Q:What raw materials are used for these carbide drills?
A:
We use 100% original alloy rods from well-known brands like Guhring, Kennametal, and CERATIZIT, ensuring no recycled materials.
Q:What coating options are available?
A:
We offer ALTiN, AlCr-based, TiSiN, and AlCr-Blue coatings with hardness ranging from 3100-3700 HV.
Q:What is the minimum diameter available?
A:
The minimum diameter available for these internal coolant carbide drills is 0.6mm.
Q:What is the lead time for orders?
A:
The average lead time is within 15 workdays, regardless of peak or off-season.
Send Inquiry
*To:
CHANGZHOU DELEVEL TOOLS CO., LTD.
CHANGZHOU DELEVEL TOOLS CO., LTD.*Content:
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