What is the policy for sample fees?

Samples are available for testing. The sample fee is 100% refunded if you place a subsequent order with a quantity of 50 pieces or more.

What payment methods do you accept?

We accept T/T, L/C, D/P, PayPal, Western Union, and small-amount payments.

Are custom labels and logos available?

Yes, we offer custom labels and logos. The customization fee is waived for orders of 200 pieces or more.

Hq Hq+1 Hqtt Hq3 Diamond Impregnated Core Drill Bits

Name: Hq Hq+1 Hqtt Hq3 Diamond Impregnated Core Drill Bits
Brand: Hubei EZdrill Tools Co., Ltd.
SKU: 2253353075

Hubei, ChinaHubei EZdrill Tools Co., Ltd.

US$83.00

1 Piece

Product specifications

HQ series

Sample price:US$83.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

Internationally Accepted

Model NO.

Length

Type

Core Drill Bit

Material

Diamond

Usage

Core Drilling

Crown Height

15mm Customization Supported

Water Outlets

Customization Supported

HRC

-10°-50°

Series

H3/H5/H7/H9/H11/H13

Transport Package

Wooden Box/Paper Box/Protective Box

Specification

Impregnated dimond bits

Trademark

EZdrill

Origin

Huanggang City, Hubei Province, China

HS Code

8207191000

Production Capacity

20000

Key features

Extended Lifespan: 15mm crown height increases footage by 25-30% and reduces replacement frequency.

Multi-Hardness Coverage: Six matrix series (H3-H13) cover soft to ultra-hard rock strata without switching bits.

Efficient Drainage: Curved flow channels reduce water resistance and prevent overheating effectively.

Premium Materials: Synthetic diamond and metal powder with unique vacuum sintering technology.

Customizable Dimensions: Crown height and water outlets support full customization per request.

Fast Standard Delivery: Standard products shipped within 3-7 working days with priority for urgent orders.

Free Custom Labels: Custom labels and logos provided free for orders of 200 pieces or more.

Sample Refund Policy: 100% sample fee refund on next order when quantity is 50 pieces or more.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceExperienced Team

Hubei EZdrill Tools Co., Ltd.

Hubei, 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: 3 Years CertifiedNearest Port: Wuhan Port, Shanghai Port, Shenzhen PortAverage Response Time: ≤1.11h

AI-Powered supplier vetting

SummaryThe supplier manufactures and sells metal tools, non-metallic mineral products, non-ferrous metal alloys, construction machinery, geological exploration equipment, and specialized oil-drilling equipment. It reports 100% finished-product inspection, two quality inspectors, a stated annual core drill bit productivity of 240,000 pieces, and production equipment including laser cutting, milling, NC lathe, sawing, boring, heat press, and cold press machines. Customization is offered from samples, designs, and full specifications. The supplier holds ISO9001:2015 and CE certifications and reports regular fire drills. Peak- and off-season lead times are each within 15 workdays. However, it reports no valid manufacturing-capacity contract with related subcontractors, no inventory, no overseas warehouse, and no overseas showroom. OEM service for known brands is reported, but no customer names or specific cases are provided. Financial records contain stated numeric values but no currency or scale, so financial...

Supplier typeThe supplier is a manufacturer and seller of metal tools, non-metallic mineral products, non-ferrous metal alloys, construction machinery, geological exploration equipment, and specialized equipment for petroleum drilling and production. The stated scope supports classification as an industrial equipment and tooling manufacturer rather than a general trading supplier.

CertificationsThe supplier reports an ISO9001:2015 management-system certificate and CE product compliance certification in multiple slices. It also reports conducting regular fire drills during the past year, providing additional operational-safety evidence, although no separate fire-safety certification is stated.

Production capacityProduction evidence includes 100% finished-product inspection, two quality inspectors, listed machining and processing equipment, annual core drill bit productivity of 240,000 pieces, and lead times within 15 workdays in both seasons. The supplier also reports no valid manufacturing-capacity contract with related subcontractors and no inventory capability, which limits evidence regarding capacity resilience and fulfillment backup.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, and reports OEM service for well-known brands. These statements directly support a broad customization offering, although no project examples or technical customization limits are given.

Product Q&A

Q:What is the standard crown height and its benefit?

The standard crown height is 15mm, which is larger than the industry average. This design increases drilling footage by 25-30% and significantly improves durability.

Q:Which rock types can this drill bit handle?

It covers all strata with six matrix series (H3 to H13), handling soft rocks like shale up to ultra-hard rocks like quartzite and calcite.

Q:What customization options are available?

We support customization for diameter, matrix, label, logo, crown height, and water outlets. Drawings must be confirmed before production.

Q:What are the delivery times for standard and custom orders?

Standard products take 3-7 working days. Customized orders typically take 20-25 working days, though urgent orders can ship within 3 days.

Q:Is there a minimum order quantity?

Yes, the minimum order quantity is 10 pieces.