133mm Coal Concave Drill Bit 3 Hole Button Bits Rock Drilling

Place of Origin China
Brand Name Hainaisen
Certification API & ISO 9001
Model Number 133NA23
Minimum Order Quantity 10 pieces
Price To be negotiable
Packaging Details customized
Delivery Time 5-7 business days
Payment Terms T/T, L/C
Supply Ability 300pcs per day

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Product Details
Name Concave Drill Bit Water Drill Bit Certification API And ISO
Application Mining&Coal&Well Suitable Formation F≤12
Hole 3 Size 133mm
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Hainaisen 133mm Concave Drill Bit


Hainaisen coal Concave Drill Bit


Hainaisen China 3 hole button bits rock drilling

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Product Description

133mm Concave Drill Bit Water Drill Bit Mining PDC Bit Metal Drill Bit



1. The top surface of the drill bit is a shallow conical surface, with 3 small water holes on the top surface and 3 large water holes in the circumferential direction of the blade, which can better clean the drill bit, make the rock powder drain away from the bottom of the well as soon as possible, and avoid secondary occurrences Broken phenomenon, to prevent the mud bag of the drill.
2. The gauge surface of the blade is inlaid with alloy gauge bars, so that the  gauge of the drill has strong wear resistance, good durability and long life;
3. The blade teeth are arranged in parallel and evenly, and the cutting teeth are made of 1308 composite high-performance composite sheets, which have good grinding performance, fast drilling speed and strong impact resistance.
4. The back inclination angle of the main cutting teeth of the drill bit can be adjusted between 16° and 20°, with strong aggressiveness, high ROP, and strong stability.


Size 133
Model number 133NA23
Body type High Manganese Steel
Number of blade 3
Primary PDC cutter size 1308
Number of nozzle 6
Diameter of nozzle 16.7
Gauge length 36.2
API connection 89 with stingers
Suitable formation F≤12
Application Mining&Coal&Well
Quality High Level
Package Corrugated carton
MOQ 10 Pieces
Certificate ISO 9001
Customized Size Yes


133mm Coal Concave Drill Bit 3 Hole Button Bits Rock Drilling 0


Our drills will ship within 5 days after 50% full payment is confirmed. The drill bits will be shipped by sea or air as your request. And if you have any other questions, please contact us freely. Thanks!

133mm Coal Concave Drill Bit 3 Hole Button Bits Rock Drilling 1


Our Principle

We adhere to the principles of high quality, high quality service, and innovation. We also insist on providing efficient products and quality services. If you are interested in our drills, please feel free to contact us. We are looking forward to cooperating with you!




1. Who are we?
We are a drill bit manufacturer started from 2013. Our main prodcuts are pdc drill bit for oil&gas, coal mining drill bit, core bit, pdc cutters and other types of pdc bits.


2. How can we guarantee the product quality?
We provide pre-production sample before mass production.
We provide final inspection before shipment.


3. 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.


4. What services can we provide?
Accepted Delivery Terms: FOB, CIF, EXW, Express Delivery;
Accepted Payment Type: T/T, L/C, PayPal, Western Union,Escrow; Language Spoken: English, Chinese, Russian.

5. How to order the products?
Send the inquiry with detail item description or with Model number. If there is no packing demand we take it as sea-way packing. If possible please attach one reference picture to avoid any misunderstanding or any links from our website for us to get a better understanding.