Do you accept sample orders for testing?

Yes, we accept sample orders to allow customers to test different connections and segment specifications.

What certifications does the product have?

The product is certified by SGS and MPA.

Od20-300mm M14 Dry Laser Welded Drilling Diamond Core Drill Bits for Granite

Name: Od20-300mm M14 Dry Laser Welded Drilling Diamond Core Drill Bits for Granite
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 1914560015

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

US$7.70-86.70

3 Pieces

Product profile

Customized

Type

Core Drill Bit

Material

Diamond

Product Name

Diamond Core Drill Bits

Manufacturing Arts

Laser Welded

Outer Diameter

20mm

Working Length

55mm

Thread

M14 or 5/8"-11

Application

Dry Drilling

Total Length

105mm

Finish

Plain

Transport Package

Carton

Specification

Trademark

Johnson Tools

Origin

China

HS Code

8207501000

Production Capacity

1000PCS/Month

Key features

Laser Welded Construction: Outer diameter 20mm and above utilize laser welding for enhanced durability.

Full Customization Options: Offers full, minor, and flexible customization from samples or designs.

SGS and MPA Certified: Product holds SGS and MPA certificates ensuring quality standards.

Wide Material Compatibility: Suitable for granite, concrete, asphalt, brick, and pavement drilling.

Protective Brazing Rods: Drill bits over 18mm include four outer and two inner brazing rods.

Rapid Response Time: One-day reply guaranteed for all inquiries and technical questions.

Sample Orders Accepted: Customers can place sample orders to test different connections and segments.

Global Export Experience: Exporting to over 70 countries with 17 years of international trade history.

Company profile

Years of Export ExperiencePatents AwardedFast DeliveryOEM Services

Johnson Tools Manufactory Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 17 Years CertifiedNearest Port: Shanghai Port, Ningbo, QingdaoAverage Response Time: ≤3.39h

AI-Powered supplier vetting

SummaryThe supplier provides OEM and ODM services and supports extensive customization, including sample-, design-, full-, minor-, and flexible customization. It has 17 years of export experience, self-managed import/export rights, 90% export sales, and accepts multiple trade and payment terms. Production is conducted on one line, supported by 11–20 quality-control staff and stated advanced equipment and checking systems. However, no management-system certifications, SDK, new products in the past year, overseas service facilities, or offline trade-show participation are reported. Service procedures and complaint handling lack written records, and production batches are not continuously reconciled. Financial and cash-flow evidence is limited to year labels, so financial credibility cannot be conclusively assessed.

Supplier typeThe supplier is an OEM/ODM manufacturer with its own factory location, one production line, stated production output, advanced equipment, and a technical workforce. It also provides export services directly through self-managed import/export rights, indicating a manufacturing-oriented supplier rather than a pure trading intermediary.

CertificationsThe supplier’s certification of management systems is explicitly listed as NIL. This is a stated absence of certification evidence and represents a deficiency for this field.

After-Sales capabilityThe supplier has a complaint-handling procedure, but no written records, and it lacks written service-assessment and corrective/preventive-action procedures or records. It also reports no overseas warehouses, showrooms, agents, branches, or offline trade-show participation, limiting documented overseas service support.

R&D capabilityThe supplier provides ODM and broad design customization, but reports no available SDK and no new products during the past year. These explicit limitations outweigh the design-service evidence when assessing demonstrated recent innovation capability.

Production capacityThe supplier reports one production line, 11–20 quality-control staff, advanced production and checking equipment, and flexible export fulfillment with one-month lead times in both peak and off-season. However, it does not continuously reconcile quantities for each batch or mass production, so production controls are not fully documented.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also offers ODM services. This is strong direct evidence of broad customization capability.