Diamond Concave Drill Bit 4 5/8 Inch 5 Blades

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 118HS3532SA
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 4 5/8 Inch (Φ118mm) Use Oil&Gas
Body Type Steel Body Condition New
Market Global Video Outgoing-Inspection Provided
Showroom Location Xi'an, China Machinery Test Report Provided
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diamond Concave Drill Bit


5 blades Concave Drill Bit


4 5/8 Inch Concave Drill Bit

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Product Description

4 5/8 Inch 5 Blades Diamond Core Drill Bit Oil Drilling Bit



1. The crown surface of the bits is long cast surface which is suitable for abrasive formation.
2. The conical surface is shallow, so the bit has good orientation,good cleaning effect and strong aggressivity.
3. The relatively short gauge length can reduce the torque due to the contact between the bits and the well wall. The gauge area has been reduced and contact force of the gauge surface has been increased. The design can enhance the lateral cutting force of the bits which helps the control of the well deviation. The gauge surface is inset by single-row PDC cutters gauge teeth in order to improve abrasive resistance.
4. The exposed PDC cutter is welded at the bottom of the gauge surface,which prevents the bit from being sticked when it is lifted.


Size 4- 5/8 inch (Φ118mm)
Model number 118HS3532SA
Body type High Manganese Steel
Number of blade 5
Primary PDC cutter size 1308
Number of nozzle 5
Diameter of nozzle 12mm
Gauge length 34.67mm
API connection API 2-7/8 REG
Make-Up Torque(KN.m) 8.2~9.5(2.09)KN·m(Mpa)
Suitable formation 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


Diamond Concave Drill Bit 4 5/8 Inch 5 Blades 0

Diamond Concave Drill Bit 4 5/8 Inch 5 Blades 1




Our drill bits will be shipped out within xx 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.


Diamond Concave Drill Bit 4 5/8 Inch 5 Blades 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. Is it produced according to the standard? And can I expect a quality product?

Yes, all our activities are accredited to ISO9001: 2015, 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.


5. 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.


6. What is your payment terms?
Our payment terms: T/T (normally 30% deposit ,balance 70% before shippment )
or LC at sight.


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