What payment methods do you accept?

We accept T/T, PayPal, and Western Union for international transactions.

What is the hardness of the tungsten carbide used?

The material has a hardness of HRA 91.8-92.4 and HRC 45-50/55-60/65/68.

Do you offer free samples?

Yes, samples are available for free upon request.

Internal Coolant Through 16mm Solid Carbide Drill Bits 5xd Tin-Coated Twist Straight Shank Drills for Metal

Name: Internal Coolant Through 16mm Solid Carbide Drill Bits 5xd Tin-Coated Twist Straight Shank Drills for Metal
Brand: Zhuzhou Grewin Tungsten Carbide Tools Co., Ltd.
SKU: 2109654935

Hunan, ChinaZhuzhou Grewin Tungsten Carbide Tools Co., Ltd.

Negotiable

10 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

After-sales Service

Yes

Warranty

6 Month

Logo Printing

Without Logo Printing

Size

Flat Drill

Customized

Non-Customized

Type

Cutting Tool

Material

Tungsten Carbide

Certification

ISO 9001:2008, ISO 9001:2000

Length

Taper-Length

Usage

Wood Drilling, Metal Drilling

Standard

CQC&ISO

Quality

Top Quality in China

Certificates

ISO9001-2008, SGS

Cutting Form

Flat, Ball Nose, Corner Radius, Roughing

Samples

for Free

Place of Origin

Zhuzhou-Carbide City

Chemical Composition

6%-12% Co-Wc

Flute

1-6

HRC

45-55 55-65, etc

Coating

CVD, PVD, Double Coating

Package

10PCS Per Plastic Box

Transport Package

Plastic Box, Standard Export Carton

Specification

33*29*19cm

Trademark

Origin

Zhuzhou

HS Code

8208101900

Production Capacity

6 Million PCS Annually

Key features

Solid Carbide Material: Made from raw micro grain tungsten carbide with 90% Wc and 10% Co for high hardness.

TiN Coating Technology: Titanium nitride coating extends cutting life by three or more times for metal drilling.

Internal Coolant Through: Design allows internal coolant flow to reduce friction and heat during drilling operations.

Wide Material Compatibility: Suitable for cutting copper, cast iron, carbon steel, stainless steel, plastic, and acrylic.

ISO 9001 Certified: Manufacturing process certified under ISO 9001:2008 and ISO 9001:2000 standards.

Versatile Cutting Forms: Available in flat, square, ball nose, corner radius, and taper flute configurations.

Diverse Size Options: Diameter ranges from 0.2mm to 20mm with lengths from 50mm to 100mm.

Company profile

Zhuzhou Grewin Tungsten Carbide Tools Co., Ltd.Hunan, China

Business Type: Manufacturer/FactoryExport Year: 2011-10-21Nearest Port: guangzhou port, shenzhen portAverage Response Time: ≤3.66hTerms of Payment: T/T, PayPal, Western UnionInternational Commercial Terms(Incoterms): FOB, CFR, CIF, CIP, EXW

AI-Powered supplier vetting

SummaryThe supplier is a limited company with 22 employees, no stated affiliation with a larger group, and a valid import/export license. It offers customization from designs and samples and reports annual productivity of 100 tons each for tungsten carbide end mills, rods, and saw tips. Export sales account for 90% of total sales, and it has participated in METALLOOBRABOTKA. However, the supplier reports no professional technical R&D status, no new products in the past year, no ODM, SDK, or 3D software design services, and only one R&D engineer. Quality and service controls are weakly documented: no written procedures or records were provided for complaint handling, supplier service assessment, or corrective/preventive actions; quality assurance, traceability, and test-equipment status are unknown or, for equipment quantity, zero. It has no stock, overseas warehouse, showroom, agent, or branch capability. ERP use is reported, but broader digitalization has not started.

After-Sales capabilityAfter-sales and service infrastructure is limited: complaint handling has no written procedures or records, and the supplier has no stock, overseas warehouse, showroom, agent, or branch. One technology engineer provides technical and after-sales service, but the available evidence does not establish an effective formal service system.

R&D capabilityInnovation evidence is weak: no new products were launched in the past year, there is one R&D engineer, and the supplier lacks ODM, SDK, and 3D software design capabilities. It can customize from designs and samples, but broader R&D and digital transformation capabilities are not demonstrated.

Production capacityThe supplier reports annual productivity of 100 tons each for tungsten carbide end mills, rods, and saw tips, and peak-season lead time of one month versus within 15 workdays off-season. However, it has no in-stock capacity and no overseas fulfillment infrastructure; the stated production figures support production capability but not superior responsiveness.

Customization capabilityThe supplier explicitly provides customization from customer designs and samples. This is direct evidence of product customization capability, although no evidence is provided regarding the scope, complexity, or engineering support of such customization.