What is the maximum drilling depth?

Standard options include 3D, 5D, 8D, and 12D lengths, with custom depths up to 15D or more available upon request.

What industries do you serve?

Our tools are widely used in aerospace, automotive, motorcycle, medical treatment, and mold processing industries.

Carbide Drill 8d Inner Cooling Carbide Twist Drill Bits Set

Name: Carbide Drill 8d Inner Cooling Carbide Twist Drill Bits Set
Brand: CHANGZHOU DELEVEL TOOLS CO., LTD.
SKU: 2176610815

Jiangsu, ChinaCHANGZHOU DELEVEL TOOLS CO., LTD.

US$6.80-198.00

5 Pieces

Sample price:US$10.80/piece.Request sample

Product profile

Customization

Available

Customized

Standard

GB/T

Model NO.

RDM

Length

80-525mm

Type

Deep-Hole Carbide Internal Cooling Drill

Material

Tungsten Carbide

Usage

Metal Drilling

Shank Type

Straight Shank

Drilling Depth

Maximum Drilling Depth 10xd,15xd,etc.

Tolerance Class

0.005-0.02mm

Transport Package

Single Package

Specification

Dia. 3-Dia. 20mm

Trademark

DELEVEL

Origin

Changzhou Jiangsu

HS Code

8207709000

Production Capacity

2000000/Year

Key features

Premium Carbide Material: 100% original alloy rods from Guhring, Kennametal, and Cerazit ensure high wear resistance.

Internal Cooling System: Advanced coolant design minimizes heat and optimizes chip evacuation for stable cutting.

Customization Available: Shank type, drilling depth, and tolerance can be customized per customer drawings.

Super Coating Options: Available with AlTiN, AlCr-based, TiSiN, or Blue coatings for enhanced performance.

Wide Standard Range: Stock available for diameters D3-D25mm with 3D, 5D, 8D, and 12D length options.

15+ Years Experience: Leading manufacturer with over 15 years in solid carbide cutting tool industry.

On-Time Delivery: Guaranteed 100% on-time delivery with lead times within 15 workdays.

Multi-Industry Application: Suitable for aerospace, automotive, medical, and mold processing applications.

Company profile

CHANGZHOU DELEVEL TOOLS CO., LTD.

Jiangsu, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤1.93hTerms 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.