What is the average lead time?

The average lead time is one month for both peak and off-season.

Can I get a free sample?

Yes, sample cost is free with a production time of 5-7 days.

What certifications does the product have?

The product complies with ISO2000:9001 standards.

Granite Diamond Core Drill Bit

Name: Granite Diamond Core Drill Bit
Brand: DONGYAN INTERNATIONAL CO., LTD.
SKU: 1998533485

Jiangsu, ChinaDONGYAN INTERNATIONAL CO., LTD.

Negotiable

100 Pieces

Sample price:US$15.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

ISO2000:9001

Model NO.

DY-09

Length

82/145/200/380/450

Type

Core Drill Bit

Material

Diamond

Usage

Masonry Drilling, Concrete or Wall Drilling

Advantage

Fast Cutting Speed

Color

as Your Requirements

Sample Cost

Free

Sample Production Time

5-7days

Bulk Order Time

20-25days

Payment Term

30% Advance, 70% Balance

Industry Experience

8years

Transport Package

Blister Package, White Box

Specification

25-350mm

Trademark

DY-Tools

Origin

Jiangsu Province, China

HS Code

8207191000

Production Capacity

100000/Month

Key features

50% Faster Drilling Speed: Vacuum diamond on steel body drills 50% faster than general purpose counterparts.

35% Longer Service Life: Engineered to last 35% longer than standard bits in lab tests.

Customizable Color: Color can be customized as per your specific requirements.

Laser Welded Construction: Segments are laser welded for enhanced durability and fast cutting.

Free Sample Availability: Free sample cost provided with a production time of 5-7 days.

Wide Size Range: Available in lengths 82/145/200/380/450 and various ODs from 25mm to 127mm.

Versatile Segment Types: Options include flat, roof, turbo, and crown segments for different needs.

Adapters Included: Adapters available to accommodate drills with different arbor sizes.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExhibition Experience

DONGYAN INTERNATIONAL CO., LTD.

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 14 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤9.37h CertifiedTerms of Payment: T/T, LC, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a small trading company in Wuxi, China, focused on hardware tools and related product sales. It has five employees, one R&D engineer, no cooperative suppliers reported, and no stated manufacturing capability. Customization is offered across samples, designs, full and minor customization, and the company reported new products during the past year, but it does not provide ODM services or OEM services for popular brands and has no available SDK. Service procedures, complaint handling, and corrective/preventive-action procedures are documented with follow-up records, although the approved-supplier list lacks approval signatures or dates. An audit by TUV Rheinland is reported as valid from June 30, 2026 to June 29, 2027, but the evaluation result is recorded as 0 without interpretation. Quality-assurance and traceability status are unknown, and no quality-control test equipment is reported. Financial records are indicated for 2023–2025, but no financial performance conclusion is possible from...

Supplier typeThe supplier is explicitly identified as a trading company and limited company located in Wuxi, China, with five employees and no reported affiliation with a larger group. Its stated activities center on sales and wholesale of hardware tools, machinery, hardware and electrical appliances, construction materials, and related goods, indicating a small independent trading profile rather than a manufacturing entity.

After-Sales capabilityThe supplier has a documented service-capability assessment procedure with follow-up records, a corrective and preventive action procedure with records, and a clear customer-complaint procedure with follow-up records. However, the approved-supplier list lacks approval signatures or dates; this does not directly negate complaint or service handling, but it indicates an administrative control weakness.

R&D capabilityThe supplier reports at least one new product during the past year and has one R&D engineer, supporting some product-development activity. Nevertheless, it has no available SDK, does not provide ODM services, and the limited staffing indicates only modest documented R&D capacity rather than a strong innovation platform.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. It also reports new products during the past year, although no ODM service, SDK, or detailed engineering resources beyond one R&D engineer are available.