Golden Stone Dth Drill Bits 216mm Tungsten Carbide Rock

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 8-1/2 HS6523TB
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, 215.9mm Certification ISO9001/API
Connection API REG Color Golden,Request,etc.
Cutter Size 1613 Application Rock Drilling,geothermal
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golden dth drill bits


stone dth drill bits


216mm tungsten carbide rock drill bits

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Product Description

8.5in 5 Blades Diamond PDC Bit Tapered Drill Bit Machine Stone Drilling Bit
Provides multiple advantages in interbed lithology.
Enhanced drill bit stability with BHA shock and vibration mitigation.
Increases cleaning and decreases balling.
Through a series of empirical calculations and optimization of DOC (depth) of the drill bit, the tool can enter 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 HS6523TB
Body type steel body
Number of blade 5
Primary PDC cutter size 1613
Number of nozzle 7
Gauge length 60mm
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

Golden Stone Dth Drill Bits 216mm Tungsten Carbide Rock 0
Golden Stone Dth Drill Bits 216mm Tungsten Carbide Rock 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!

Golden Stone Dth Drill Bits 216mm Tungsten Carbide Rock 2
Our Principle
We adhere to the principles of high quality, good after-service and great innovation. We also insist on providing efficient products and excellent service. Please contact us if you are interested. We look forward to hearing from you!


1. Why you choose us?
We are factory of drill bits, so the price is affordable, and the quality can be controlled. Also, we can do customized products according to client's request.
Our promises: reasonable prices, short production period, and satisfactory after-sales services.

2. Is it produced according to the standard? And can I expect a quality product?
All our activities are accredited to ISO9001, both in products and services.
At the same time, mature production technology will ensure the quality to satisfy the international request.
We have strictly inspection in the production.
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 is the time about the delivery?
A: The lead time depend on the quantity of the order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement. 

Communication knows no boundaries, no matter where you are. So if you have any questions, please feel free to contact us anytime :)