What is the standard length of the drill bit?

The standard total length is 450mm, with a drilling length of 400mm.

Which markets do you export to?

We export to North America, South America, Europe, Southeast Asia/Mideast, Africa, East Asia, Australia, and South Asia.

Diamond Laser Welded Concrete Core Drilling Bits

Name: Diamond Laser Welded Concrete Core Drilling Bits
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 1938264315

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

US$9.40-92.00

5 Pieces

Sample price:US$30.00/piece.Request sample

Product profile

Customized

Standard

SGS,GB

Length

Stub-length

Model NO.

LW32T450CDB

Type

Core Drill Bit

Material

Diamond

Usage

Concrete

Diameter

127mm

Connection

1-1/4unc

Total Length

450mm

Teeth Type

Turbo/Mesh Turbo Type

Thickness

2.0mm

Teeth Number

9nos

Application

Concrete/Reinforce Concrete

Transport Package

White Box, Blister Card Packing.

Specification

4inch

Trademark

Johnson Tools

Origin

China

Production Capacity

30000PCS/Month

Key features

Diamond Segments: Provides extra joint strength to effectively cut hard concrete and other tough materials.

Wet and Dry Use: Designed for both wet and dry drilling; wet use recommended for extended lifespan.

Wide Diameter Range: Available in diameters from 32mm to 450mm to suit various construction needs.

Standard Connection: Features 1-1/4UNC connection with 1 1/4'-7 arbor, compatible with known brand rigs.

OEM/ODM Service: Supports full customization from samples, designs, or minor adjustments.

Quality Inspection: 100% finished product inspection including visual and function checks.

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: ≤3.60h

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.