Black Double Row Dth Button Bits 7 Nozzle Rock Drilling

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 8-1/2 HS65330C
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
Diameter 8-1/2inch Or 215.9mm Material Diamond & Sintered Carbide
Color Golden,Request,black,etc. Cutter Size 13/16/19mm
Nozzle 7 Row Double Row
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Hainaisen double row dth button bits


Hainaisen double row dth button bit


double row dth button bit Hainaisen

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Product Description

8-1/2in 5 Blades Carbide Drill Bits Mining Drill Bits PDC Cutters Rock Bit
Double row knives extend aggression and durability.
FEA software for tool distribution and layout makes drilling more efficient and reduces NPT.
Through a series of empirical calculations and optimization of the DOC (depth) of the drill bit, the tool enters the
formation more reasonably.
The helical blade effectively improves the stability and ROP of the drill bit.

Size 8 1/2 inch (Φ215.9mm)
Model number 8-1/2 HS65330C
Body type steel body
Number of blade 5
Primary PDC cutter size 1613
Number of nozzle 7
Gauge length 53.05mm
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

Black Double Row Dth Button Bits 7 Nozzle Rock Drilling 0
Black Double Row Dth Button Bits 7 Nozzle Rock Drilling 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!

Black Double Row Dth Button Bits 7 Nozzle Rock Drilling 2

Our Principle
Our goal is provide the best quality products and service to our customers,we have professional R&D team,domestic advanced production equipment and precision instruments Reduce the cost,Speed the drilling,Guarantee the safety is always our aim.
Win-win cooperation is our ultimate pursuit. Contact us feel free if you are finding drill bit manufacture.



1. Is your company a distributor or a manufacturer?
A: We are a professional pdc drill bits manufacturer in China.

2. Can I expect a good-quality product?
Of course. All our activities are accredited to ISO9001, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
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 of the details of the item or Model number you want. If there is no packing demand, we will take it as sea-way packing. Please attach a reference picture or any links from our website to avoid any misunderstanding. Thanks so much!
4. Whether accpect customized products according to client's requirement?
Yes, we accept customized products, no matter what size and what type. Please feel free to contact us.

Communication knows no boundaries, no matter where you are.

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