Concrete 8.5in Diamond PDC Bit Welding Coal Mining Bit

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 8-1/2 HS95130B
Minimum Order Quantity 5 pieces
Price To be negotiable
Packaging Details iron case
Delivery Time 5-7 business days
Payment Terms T/T, L/C
Supply Ability 20pcs per day

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Product Details
Size 8.5in Or 215.9mm Color Golden, Request, Etc.
Process Welding Blade Number 5
Application Concrete Gauge Length 66.9mm
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concrete diamond PDC bit


8.5in diamond PDC bit


welding Coal Mining Bit

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Product Description

8.5inch 5Blades Concrete Core Bit Oil PDC Rock Bit Machine Stone Drilling Bit
Superior PDC tool technology for perfect impact strength and wear resistance.
Double row cutters enhance aggression and durability.
FEA software for tool distribution and layout makes drilling more efficient and reduces NPT.
The tool angle is optimized in both axial and radial directions by FBS software, resulting in a more aggressive
and durable drill.

Size 8 1/2 inch (Φ215.9mm)
Model number 8-1/2 HS95130B
Body type steel body
Number of blade 5
Primary PDC cutter size 1913
Number of nozzle 6
Gauge length 66.9mm
API connection 4-1/2 REG
Make-Up Torque(KN.m) 16.3~21.7(4.79) KN·m(Mpa)
Application Oil & Nature Gas
Quality High Level
Package Iron Case
MOQ 5 Pieces
Certificate ISO 9001
Customized Size Yes

Concrete 8.5in Diamond PDC Bit Welding Coal Mining Bit 0
Concrete 8.5in Diamond PDC Bit Welding Coal Mining Bit 1
Our bits will be shipped within 5 days after 40% full payment is received. They will be shipped by sea or air according to your requirements. Please feel free to contact us if you have any other requests. Thanks!

Concrete 8.5in Diamond PDC Bit Welding Coal Mining Bit 2

Our Principle
We adhere to the principles of high quality, great after-service and great communication. We also adhere to providing efficient products and excellent service. Please contact us if you are interested. We look forward to hearing from you!


1. Is your company a distributor or a manufacturer?
A: We are a professional Rock Bits manufacturer in China.

2. Is it produced according to the standard? And can I expect a quality product?
All our activities are accredited to ISO9001: 2008, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
We have many high quality prducts (the more information).
Our bits are exported to the Middle East, Europe, North America, South America, Australia, and other countries and regions.

3. How to order the products?
Send an inquiry with detailed item descriptions or model number. You can also include a reference picture to avoid any misunderstanding if possible.
4. What services can we provide?
Accepted Delivery Terms: FOB, CIF, EXW, Express Delivery;
Accepted Payment Type: T/T, L/C, PayPal, Western Union,Escrow;
Language Spoken: English, Chinese, Russian.


Communication knows no boundaries, no matter where you are.

If you have any requests, please feel free to contact us at anytime!