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28mm Top Quality Tapered 7 Degree Cross Drill Bit for Rock Drilling

Name: 28mm Top Quality Tapered 7 Degree Cross Drill Bit for Rock Drilling
Brand: Kaiyu (Zhejiang) Drilling Tools Co., Ltd
SKU: 865540305

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

US$3.10

100-1,999 Pieces

US$3.05

2,000-4,999 Pieces

US$3.00

5,000+ Pieces

Sample price:US$3.30/piece.Request sample

Product profile

Customization

Available

Certification

ISO9001:2015;SGS

Standard

Model NO.

Cross Bits

Surface Treatment

Spray-Paint

Manufacturing Process

Forging

Material

Alloy Steel

Power Type

Pneumatic

Condition

New

Process

Heat Treatment

Color

Golden,Blue,Red,etc.

Transport Package

Wooden Case or Plastic Box

Specification

28mm

Trademark

KAIYU

Origin

Taizhou, Zhejiang

HS Code

8207199000

Production Capacity

1000000 PCS/ Month

Key features

Customizable Color Options: Available in Golden, Blue, Red, and other custom colors.

Wide Diameter Range: Diameters from 32mm to 80mm available for various drilling needs.

High-Quality Materials: Constructed from 35CrMoNiV, Carbide, and high-grade imported steel.

Long Manufacturing History: Over 48 years of specialized experience in drilling tools manufacturing.

Rapid Delivery Time: Standard delivery within 7-15 days for most orders.

Certified Quality Standards: ISO9001:2015 and SGS certified for reliable performance.

Advanced Manufacturing Process: Uses CNC machinery, heat treatment, and mature welding technology.

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: ≤18hTerms 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.