What certifications do you have?

Our products are certified by SGS and MPA, and we have been established since 2000.

What materials can this drill bit handle?

It is designed for drilling concrete, brick, block, pavers, and asphalt.

Od102mm 4inch 4" Diamond Core Bit Drilling Bits for Construction

Name: Od102mm 4inch 4" Diamond Core Bit Drilling Bits for Construction
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 675284015

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

Negotiable

50 Pieces

Product profile

Customized

Non-Customized

Length

Middle Size

Type

Core Drill Bit

Model NO.

15.3.3

Material

Diamond

Usage

Masonry Drilling

Diameter

28-70mm

MOQ

50PCS

Delivery Time

20days

Establishing Year

2000

Thread Size

3/8" or 1/2" Shaft Without Thread

Company Type

Direct Manufacturer and Trading Company for Stone

Transport Package

Carton

Specification

Trademark

Johnsontool

Origin

China

HS Code

82075010

Production Capacity

1000PCS/Month

Key features

Multi-Size Customization: Available in diameters from 32mm to 350mm with customizable segment dimensions.

Versatile Application: Suitable for wet or dry drilling on concrete, brick, block, pavers, and asphalt.

Premium Material Quality: Constructed with premium diamond segments and laser welding technology for durability.

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

Global Certification: Holds SGS and MPA certificates with over 20 years of manufacturing experience.

Flexible Shipping Options: Shipped via sea, air, land, or courier with 15-30 day delivery times.

Comprehensive Payment Terms: Accepts T/T, L/C, PayPal, Western Union, and Credit Card payments.

OEM and ODM Services: Full customization available from samples, designs, or minor adjustments.

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: ≤4.52h

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.

Product Q&A

Q:How to place an order?

Provide product details including type, size, specification, material, machine HP, quantity, and nearest port. We will issue a Proforma Invoice upon confirmation.

Q:What is the delivery time?

If steel body is in stock, shipment takes around 15 days. Otherwise, it usually takes 20-30 days.

Q:Can the product size be customized?

Yes, sizes can be customized. We offer diameters ranging from 32mm to 350mm with various segment dimensions.

Q:What are the payment terms?

We accept T/T, Irrevocable L/C at sight, PayPal, Western Union, and Credit Card.

Q:Do you provide after-sales service?

Yes, we track goods, monitor product performance, and collect customer feedback for continuous improvement.