Rock Threaded Button Bits FBS 8.5 Inch Oil Well Drill Aggressive Durable

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

Contact me for free samples and coupons.

WhatsApp:0086 18588475571

Wechat: 0086 18588475571


If you have any concern, we provide 24-hour online help.

Product Details
Size 8.5inch Or 216mm Name Drilling Bits Prices,PDC Drill Bits
Usage Water Well Drilling Diameter As Required
Gauge Length 66.57mm Model Number 8-1/2 HS65330C
High Light

Hainaisen fbs threaded button bit


FBS Threaded Button Bit


china fbs threaded button bits

Leave a Message
Product Description

8.5in 5 Blades Diamond Tip Drill Bit Cutting Drill Bit Rock Drilling Bit



The tool angle is optimized axially and radially by FBS (Force Balance Analysis) software, resulting in a more aggressive  and durable drill.

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 66.57mm
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


Rock Threaded Button Bits FBS 8.5 Inch Oil Well Drill Aggressive Durable 0

Rock Threaded Button Bits FBS 8.5 Inch Oil Well Drill Aggressive Durable 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!


Rock Threaded Button Bits FBS 8.5 Inch Oil Well Drill Aggressive Durable 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. 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 to avoid any misunderstanding or any links from our website. Thank you so much!


4. What services can we provide?
Accepted Delivery Terms: FOB, CIF, EXW, Express Delivery;
Accepted Payment Type: T/T, L/C, Western Union.


Communication knows no boundaries, no matter where you are.

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