What are the shipping options?

We ship via Commercial Express (UPS, DHL, FedEx, Aramex) or by air, sea, or land as requested, with tracking numbers updated within two working days.

What is the minimum order quantity?

The minimum order quantity is 50 pieces.

What is the lead time for delivery?

The average lead time is within 15 working days for both peak and off-peak seasons.

Hard Stone

Name: 1-3/8 Inch Laser Welded Dry or Wet Diamond Core Drill Bits for Concrete/Marble/Granite/Brick/Hard Stone
Brand: Zhengzhou Rayjie Tools Co., Ltd.
SKU: 2147027582

Henan, ChinaZhengzhou Rayjie Tools Co., Ltd.

US$17.30-18.00

10 Pieces

Sample price:US$3.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

ISO9001

Model NO.

RYD12362

Length

60mm

Type

Core Drill Bit

Material

Diamond

Usage

Masonry Drilling

Product Name

Diamond Dry Drill Bit for Granite

Machine

Angle Grinder

Use

Wet or Dry

Advantage

Dry Using, Longer Working Life

Process

Laser Welding & Vacuum Brazed Technology

Color

Gold, Black, Red, Blue, or as Your Requirement

Connection

M14, Hex, Round, 5/8-11, 1/2gas

Feture

Less Chipping on Granite

Total Length

100mm

Use on

Hard Granite, Marble, Engineering Stone, Concrete

Transport Package

Paper Box, Plastic, Aluminium Suitcase, etc

Specification

5mm-120mm

Trademark

Rayjie or OEM

Origin

China

HS Code

8207501000

Production Capacity

500000pieces / Month

Key features

Laser Welded Technology: Prevents segments from detaching during dry working conditions.

Vacuum Brazed Protection: Ensures clean cuts and protects steel core inside and outside.

Turbo Segment Design: Provides aggressive drilling speed and smooth cutting for sizes 32mm and above.

High-Quality Materials: Combines high-density diamond with strong steel body for extended life.

Versatile Application: Suitable for hard stone, granite, marble, concrete, and engineering stone.

Customizable Colors: Available in Gold, Black, Red, Blue, or as per customer requirement.

Long Working Life: Reduces need for frequent grinding head replacement and saves time.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityCustomization from DesignsR&D Capabilities

Zhengzhou Rayjie Tools Co., Ltd.

Henan, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Designs CertifiedExport Year: 1 Year CertifiedNearest Port: Zhengzhou AirportAverage Response Time: ≤1.99h CertifiedTerms of Payment: T/T, PayPal, Western Union, etc.

AI-Powered supplier vetting

SummaryZhengzhou Rayjie Tools Co., Ltd. describes itself as a professional manufacturer and supplier of diamond tools, with claimed experience, production equipment, quality controls, and a complete industrial chain. It reports SGS certification and customization from designs. Export activity is stated at 90% of total sales, but the supplier began exporting only one year ago and has no overseas showrooms, agents, branches, or offline trade-show participation. After-sales service is included in its industrial chain, yet documented service procedures are unavailable. Innovation evidence is weak: no new products were introduced in the past year, and ODM, SDK, and well-known-brand OEM services are unavailable. Reported financial figures are all zero, so financial credibility cannot be positively established from the provided information.

Supplier typeThe supplier explicitly identifies itself as a professional manufacturer and supplier specializing in diamond tools. Its stated activities cover design, mold development, procurement, processing, inspection, and after-sales service, supporting classification as an integrated manufacturer rather than only a trading intermediary.

CertificationsThe supplier states that it has passed authoritative SGS certification and maintains quality control from raw-material inspection through delivery. It also reports an independent trademark and standardized brand operation system, although no certificate scope or validity details are provided.

R&D capabilityThe supplier states that it introduced no new products during the past year and does not provide ODM services or an available SDK. Although it describes itself as engaged in R&D and production, the explicit recent innovation indicators show limited demonstrated innovation capability.

Production capacityThe supplier reports a complete industrial chain, advanced production lines, precision testing instruments, mature processing technology, and quality controls covering production through delivery. These statements explicitly support production capability, though no capacity, output, or equipment quantities are provided.

Customization capabilityThe supplier explicitly offers customization from customer designs. This supports design-based customization, but the provided information does not establish the scope, technical limits, tooling process, or delivery performance of customized orders.

Product Q&A

Q:Who are we?

We are based in Henan, China, started in 2016, with 11-50 office staff, selling globally to regions including North America, Western Europe, and the Middle East.

Q:How can you guarantee quality?

We always produce a pre-production sample before mass production and conduct a final inspection before shipment.

Q:What can you buy from us?

We produce diamond tools with different models or sizes as per your request, offering OEM or ODM services.

Q:Why should you buy from us not from other suppliers?

Our core team has over 20 years of experience in manufacturing and supplying diamond tools, focusing on continuous technology improvement.

Q:What services can you provide?

We accept delivery terms like FOB, CFR, CIF; payment currencies USD, EUR; and payment types including T/T, L/C, Credit Card, PayPal, Western Union, and Cash.