Does it have a self-cooling feature?

Yes, it features self-cooling and self-sharpening capabilities, particularly from 6mm to 14mm.

How long is the delivery time for samples?

Samples are free, and the delivery time is typically 3-7 days.

25mm High Diamond Concentration Diamond Tool Core Drill Bit for Drilling Granite Marble

Name: 25mm High Diamond Concentration Diamond Tool Core Drill Bit for Drilling Granite Marble
Brand: SINO ZHENG INDUSTRIAL INC.
SKU: 2060544225

Henan, ChinaSINO ZHENG INDUSTRIAL INC.

US$1.00-150.00

1 Piece

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Blade Type

Circle

Manufacturing Process

Electroplating

Model NO.

BSD-D1

Application

Concrete

Size

6-178mm

Character

Sharp

Delivery

3-7days

Sample

Free

Material

Diamond

Segment

Customizable

Transport Package

Carton

Trademark

BOSDI

Origin

China

HS Code

8202391000

Production Capacity

5000PCS/Day

Key features

High Diamond Concentration: Features 40/50# diamond grit for superior drilling performance and extended tool life.

Versatile Wet and Dry Use: Can be used in both wet and dry conditions with cooling slots for easier core removal.

Self-Cooling Design: Self-sharpening and self-cooling features from 6mm to 14mm diameters for efficient operation.

Customizable Segment: Segment is customizable to meet specific drilling requirements and applications.

Wide Size Range: Available in sizes from 6mm to 178mm to suit various drilling needs.

Smooth Drilling Shank: Protective diamond strips on the shank ensure smoother drilling and improved lifespan.

Fast Drilling Speed: Fantastic fast drilling speed compared to traditional electroplated drill bits.

Free Sample Available: Free samples provided for testing and quality verification before bulk orders.

Company profile

Importers and ExportersFast DeliveryR&D Capabilities

SINO ZHENG INDUSTRIAL INC.

Henan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2015-05-25Nearest Port: ZHENGZHOU, QINGDAO, SHANGHAIAverage Response Time: ≤7.04hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, CPT, EXW

AI-Powered supplier vetting

SummarySINO ZHENG INDUSTRIAL INC. is identified as both a trading company and manufacturer/factory in China, offering magnesium wheels, welding wire, heatsinks, anodes, plates, and related products. It reports ISO 9001 and ISO 14001 certifications, more than 10 production lines, 6–10 R&D engineers, and 6–10 quality-control staff. Export activity is established, with 71%–90% of sales from exports, self-operated import/export rights, exports beginning in 2015, and markets across the Americas, Europe, and Southeast Asia. Product descriptions and company information indicate technical expertise in magnesium materials and welding processes. However, overseas service infrastructure, 3D design, OEM/ODM, after-sales capability, and customization are not sufficiently documented. The audit record identifies BV, but the stated evaluation result is 0, which should be treated cautiously.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, indicating combined commercial and manufacturing functions. Its listed product portfolio is centered on magnesium products.

CertificationsThe supplier lists ISO 9001 and ISO 14001 management-system certifications. A BV audit is also recorded with validity from September 10, 2025 to September 9, 2026, but the audit evaluation result is stated as 0, so the audit outcome itself does not provide positive assurance.

R&D capabilityThe company describes technological, product, and process innovation, including a one-time extrusion process for 1.2 mm magnesium welding wire and efforts to expand magnesium applications. It also reports 6–10 R&D engineers, but 3D design, new-product development status, ODM, and OEM capabilities are marked unknown.

Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, and stated output for magnesium welding wire and forged magnesium wheels. It also reports off-peak lead times within 15 working days and peak-season fulfillment of 2–3 months, supporting an established production operation, although the production figures should be interpreted as self-reported.

Client casesTwo records identify the same buyer, CÔNG TY CỔ PHẦN HUY MINH, associated with specified cathodic-protection alloy products imported into Vietnam. These records provide evidence of an associated buyer and product transactions, but they do not establish the scale, duration, performance, or breadth of customer references.