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42mm 8bb Button Bits Tapered 7 11 12degree Rock Drill Bit Quarrying
US$5.50
100-1,999 Pieces
US$5.40
2,000-4,999 Pieces
US$5.30
5,000+ Pieces
Sample price:US$6.00/piece.Request sample
Product profile
Customization
AvailableCustomized
CustomizedLength
65mmModel NO.
Tapered button bitType
Button BitsMaterial
Tungsten CarbideUsage
Well Drilling, Ore Drilling,Mining,Quarrying,TunnelingPower Type
PneumaticCondition
NewProcess
Heat TreatmentColor
Golden, Yellow, Customized.Transport Package
Wooden CaseSpecification
42mmTrademark
KaiyuOrigin
Taizhou, ZhejiangHS Code
8207199000Production Capacity
1000000 PCS Per MonthKey features
Customized Color Options: Available in Golden, Yellow, or fully customized color per customer request.
Wide Diameter Range: Diameters available from 30mm to 53mm to suit various drilling needs.
Premium Carbide Material: Features high-grade tungsten carbide inserts from Boart Longyear for durability.
48 Years Manufacturing Experience: Factory specialized in drilling tools and spare parts for over four decades.
High Drilling Efficiency: Superior technology provides longer primary drilling time compared to chisel bits.
Versatile Button Types: Includes hemispherical, conical, and parabolic buttons for different resistance needs.
Fast Delivery Time: Standard delivery within 7-15 days regardless of peak or off-peak season.
Company profile

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.
Product Q&A
Q:What is the delivery time for these bits?
A:
The standard delivery time is 7-15 days, applicable for both peak and off-peak seasons.
Q:What materials are used to make these bits?
A:
They are made from 35CrMoNiV steel and premium tungsten carbide inserts from Boart Longyear.
Q:Can the color of the bits be customized?
A:
Yes, we offer Golden, Yellow, or fully customized colors based on your requirements.
Q:What is the available diameter range?
A:
Diameters range from 30mm to 53mm, including 32, 34, 36, 38, 40, 42, and 50mm.
Q:What is the warranty or quality guarantee?
A:
Our factory has 48 years of experience with mature welding technology ensuring high quality and reliability.
Send Inquiry
*To:
Kaiyu (Zhejiang) Drilling Tools Co., Ltd
Kaiyu (Zhejiang) Drilling Tools Co., Ltd*Content:
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