What is the effective length of the drill bit?

The effective length for all models in this series is 450mm.

What manufacturing technology is used?

The drill bits are manufactured using laser welding technology for enhanced quality.

What are the arbor options available?

The drill bits come with 1 1/4'UNC or 1/2''BSP arbor options.

102mm Diamond Core Drill Bit for Concrete Drilling

Name: 102mm Diamond Core Drill Bit for Concrete Drilling
Brand: Shijiazhuang Corediam Tools Technology Co., Ltd.
SKU: 744369882

Hebei, ChinaShijiazhuang Corediam Tools Technology Co., Ltd.

US$10.00-30.00

20 Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Type

Core Drill

Usage

Masonry Drilling, Reinforced Conrete Drilling

Model NO.

CWDA

Manufacturing Technology

Laser Welding

Segment Height

10mm

Diameter

25mm-350mm

Drilling Condition

Wet Drilling

Transport Package

Carton, Case, Pallet

Specification

102x10x450mm

Trademark

COREDIAM

Origin

China

HS Code

82071910

Production Capacity

2000 Pieces Per Month

Key features

Laser Welding Technology: Manufactured using advanced laser welding for superior durability and segment integrity.

Superior Sharpness: Achieves fast drilling speeds, especially when cutting through steel reinforcement.

Wide Diameter Range: Available in sizes from 25mm to 350mm to suit various drilling requirements.

Versatile Application: Ideal for drilling concrete, reinforced concrete, and masonry with high efficiency.

Standard Quality Level: Meets standard quality requirements for reliable performance in construction tasks.

Wet Drilling Compatible: Designed specifically for wet drilling conditions to ensure reasonable lifespan.

Multiple Arbor Options: Features 1 1/4'UNC and 1/2''BSP arbor types for compatibility with various drills.

Consistent Segment Height: All models maintain a uniform 10mm segment height for stable cutting performance.

Company profile

Shijiazhuang Corediam Tools Technology Co., Ltd.

Hebei, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2007-01-01Nearest Port: Tianjin Seaport, Beijing Airport, Shanghai PortAverage Response Time: ≤2.63hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryCorediam Tools is a China-based limited company operating as both a trading company and manufacturer/factory in Hebei. It focuses on diamond tools for construction, stone processing, and DIY markets, with 10 production lines and stated output across saw blades, grinding wheels, core drill bits, and wire saws. The supplier reports ISO 9001 and ISO 14001 management-system certifications, 11–20 R&D engineers, 21–30 quality-control staff, automated manufacturing equipment, and product authentication to German MPA and EU EN 13236 standards. Its export network covers more than 50 countries and exports account for 90% of total sales. Evidence supports production, quality-management, innovation, and international-export capabilities. However, the provided information does not establish after-sales service performance, financial credibility, customization capability, or specific customer cases.

Supplier typeThe supplier is identified as a trading company in one record and as both a trading company and manufacturer/factory in another. Its stated activities include researching, developing, manufacturing, and marketing diamond tools, indicating a combined trading and manufacturing profile rather than a purely commercial intermediary.

CertificationsCorediam reports ISO 14001 and ISO 9001 certification for supplier management systems. Its products are also stated to be authenticated to German MPA and European Union EN 13236 standards, providing explicit evidence of formal management-system and product-standard credentials.

R&D capabilityCorediam explicitly emphasizes technology innovation and R&D, reports 11–20 R&D engineers, and describes advanced automatic pressing, sintering, and German Dr. Fritsch automatic laser-welding machinery. Its broad product range and high-tech-enterprise description support an established innovation and development capability.

Production capacityThe supplier reports 10 production lines and manufacturing output covering diamond saw blades, laser-welded blades, grinding cup wheels, core drill bits, and diamond wire saws. It also states that automated pressing, sintering, and laser-welding equipment is used, with rigorous inspection and quality-control processes, providing explicit evidence of multi-product production capacity.