What certifications does the product have?

The product has ISO9001:2015 certification.

Where is the product manufactured?

The place of origin is Taizhou, Zhejiang, China.

28mm Tapered Rock Drilling Cross Bit

Name: 28mm Tapered Rock Drilling Cross Bit
Brand: Kaiyu (Zhejiang) Drilling Tools Co., Ltd
SKU: 902900585

Zhejiang, ChinaKaiyu (Zhejiang) Drilling Tools Co., Ltd

US$2.80

100-1,999 Pieces

US$2.75

2,000-4,999 Pieces

US$2.70

5,000+ Pieces

Sample price:US$3.00/piece.Request sample

Product profile

Customization

Available

Customized

Length

65mm

Model NO.

Cross Bits

Type

Cross Bits

Material

High Carbon Steel

Usage

Well Drilling

Power Type

Pneumatic

Condition

New

Process

Heat Treatment

Color

Golden, Yellow, Customized.

Transport Package

Wooden Case

Specification

28mm

Trademark

Kaiyu

Origin

Taizhou, Zhejiang

HS Code

8207199000

Production Capacity

1000000 PCS Per Month

Key features

Customized Color Options: Available in Golden, Yellow, Red, Blue and other customized colors.

Wide Diameter Range: Diameters from 32mm to 70mm including 32, 34, 36, 38, 40, 44, 46, 48, 50, 55, 60, 65, 70mm.

High Quality Materials: Constructed from 35CrMoNiV steel and high-grade tungsten carbide inserts.

Sharpenable Carbide Tips: Carbide tips can be ground to be sharper when worn out before replacement.

48 Years Manufacturing Experience: Factory specialized in drilling tools and spare parts for over 48 years.

Fast Delivery Time: Standard delivery within 7-15 days for both peak and off-peak seasons.

ISO 9001:2015 Certified: Manufacturing process certified under ISO 9001:2015 quality standards.

Company profile

Kaiyu (Zhejiang) Drilling Tools Co., Ltd

Zhejiang, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2004-06-01Nearest Port: NINGBO PORT, SHANGHAI PORTAverage Response Time: ≤10.33hTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryKaiyu (Zhejiang) Drilling Tools Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory, specializing in rock-drilling products including button bits, DTH bits and hammers, drill rods, and drill pipes. It reports ISO 9001 certification, six production lines, experienced technical and R&D personnel, and a quality-control system. Stated annual capacities include 120,000 button bits, 60,000 DTH bits, and 6,000,000 chisel bits, with lead times of within 15 workdays in both off-peak and peak seasons. The supplier serves multiple global regions and has export capability through agents and self-operated import/export rights. However, the provided information does not substantiate after-sales service arrangements, financial credibility, product customization, or specific customer cases.

Supplier typeThe supplier is described as a trading company and also as a trading company/manufacturer or factory. Its legal form is a limited company located in Zhejiang, China, indicating a mixed commercial and manufacturing profile.

CertificationsThe supplier explicitly reports ISO 9001:2015 Quality Management System Certification and lists ISO 9001 under its management-system certifications. This supports the presence of a documented quality-management certification.

R&D capabilityThe supplier reports experienced and high-tech personnel, foreign equipment and technologies, unique techniques, specialized equipment, and R&D engineers with 6–10 years of experience. These statements support technical development capability, although no specific patented or newly developed products are identified.

Production capacityThe supplier reports six production lines, quality-control inspection, and annual capacities of 120,000 button bits, 60,000 DTH bits, and 6,000,000 chisel bits. It also states order fulfillment within 15 workdays during both peak and off-peak seasons, supporting a substantial and responsive production capability.