6 Blades PDC Core Bit 215.9mm For Water Rock Drilling

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 8-1/2HS6653DA
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 1/2 Inch (Φ215.9mm) Application Water/Oil/Mining
Body Type Steel Body Condition New
Market All Over The World Advantage Good Price
Showroom Location Xi'an, China Processing Other
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6 Blades PDC Core Bit


215.9mm PDC Core Bit


215.9mm pdc core drill bits

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Product Description

8 1/2 Inch 6 Blades Diamond Tip Drill Bit Rock Drilling Bit



1. The crown surface of the drill bit is a short casting surface, which is suitable for hard and neutral strata.
2. The taper surface is shallow, the drill bit has good orientation, good cleaning effect and strong aggressiveness.
3. The PDC tool angle is 18-25°, which enables the drill to have higher machinability.
4. There are double rows of PDC cutters embedded in the shoulder of the drill bit, which can be drilled and ground at the same time, complementing each other. They take on the cutting tasks separately so that the drill can drill at high speed.
5. The drill bit adopts a stepped design to reduce the friction with the borehole wall and improve the steering efficiency. The long gauge surface is embedded/inlaid with double-row PDC tool gauge teeth to enhance wear resistance and protect the gauge well.


Size 8-1/2 inch (Φ215.9mm)
Model number 8-1/2HS6653DA
Body type High Manganese Steel
Number of blade 6
Primary PDC cutter size 1613
Number of nozzle 6
Diameter of nozzle 20mm
Gauge length 81mm
API connection API 4-1/2 REG
Make-Up Torque(KN.m) 16.3~21.7(4.79)KN·m(Mpa)
Suitable formation Hard and Abrasive formation
Weight On Bit(WOB) 4-16 T
Rotary Speed(RPM) 60-240r/min
Application Oil & Nature Gas
Quality High Level
Package Iron Case
MOQ 5 Pieces
Certificate ISO 9001
Customized Size Yes


6 Blades PDC Core Bit 215.9mm For Water Rock Drilling 0

6 Blades PDC Core Bit 215.9mm For Water Rock Drilling 1




Our drill bits will be shipped out within 7 days after the 50%/full payment is confirmed.

We ship the bits by sea, by air. Or if you have any other demands, please feel free to let us know.

6 Blades PDC Core Bit 215.9mm For Water Rock Drilling 2


Our Principle

We are insisting in the principle of high quality, superior service and the courage to innovate. We are also adhering to providing the efficient products and excellent services. If you are interested in our drill bits, please feel free to contact us. We are looking forward to cooperating with you!



1. Are you a trading company or manufacturer?

We have been a professional manufacturer of PDC bits since 2013.


2. Whether accept customized according to clients' requirements?

Yes, We accept customized products, no matter what size and what type. Please feel free to contact us.


3. About lead time and shipping time?

The lead time depends on the quantity of the order. Usually, it will take 3-5 days to ship to Tianjin Port or XI'AN Airport, China. For the small order or urgent order, we can send you by air once the order is confirmed.


4. How do you guarantee your quality?

We select the advanced production technology and equipment, strictly control the whole production process, and inspect the finished drill bits. We can also make several design changes according to the customer's feedback, and finally ensure the customer's excellent drilling effect.


If you have any questions, please feel free to contact us. No matter how far away we are, communication is no boundaries.