Tapered Cross Drill Bit 5 Blade 311.15mm Well Drilling

Place of Origin China
Brand Name Hainaisen
Certification ISO 9001
Model Number 12-1/4 HS95230C
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 12 1/4 Inch (Φ311.15mm) Cutter Size 13, 16, 19mm
Processing Type Sintering Item Material Stainless Steel,diamond
API Connection 6-5/8 REG Primary PDC Cutter Size 1913
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Cross Drill Bit 5 Blade


Cross Drill Bit 311.15mm


311.15mm pdc well drilling bit

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Product Description

12 1/4 Inch 5 Blades Cross Drill Bit Tapered Reamer Drill Bit Rock Drill Bits

1. Tool exposure is optimized to ensure the bit is capable of higher ROP (soft to moderate formations).
2. The shock absorber is designed to allow the bit to drill through the formation with a hard punch.
3. Using dynamic flow pattern simulation technology to optimize the hydraulic system of the drill bit, enhance the cleaning and cooling effect of the drill bit effectively prevents the bit from pilling.


Size 12 1/4 inch (Φ311.15mm)
Model number 12-1/4 HS95230C
Body type steel body
Number of blade 5
Primary PDC cutter size 1913
Number of nozzle 7
Gauge length 78.15mm
API connection 6-5/8 REG
Make-Up Torque(KN.m) 33.03~43.3(9.56) KN·m(Mpa)
Application Oil & Nature Gas
Quality High Level
Package Iron Case
MOQ 51 Pieces
Certificate ISO 9001
Customized Size Yes

Tapered Cross Drill Bit 5 Blade 311.15mm Well Drilling 0
Tapered Cross Drill Bit 5 Blade 311.15mm Well Drilling 1
Our bits will be shipped within 4 days after 50% full payment is received by sea or air as you require.
Please contact us freely if you have any other requests.
Tapered Cross Drill Bit 5 Blade 311.15mm Well Drilling 2 
Our Principle

Our principle is to provide our customers with the highest quality tools, accessories, and services in the industry. Years of experience, well-trained professionals and a complete mechanical workshop support us. Reducing costs, speeding up drilling, and ensuring safety have always been our mission.

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 promise is to provide reasonable prices, short production period, and satisfactory after-sales services.

2. Whether accpect customized products according to client's requirement?
Yes, we accept customization, no matter what size or how many blades you want.

3. What is the time about the delivery?
The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement. According the distance from China to your port, usually from China to European about 25 days. To West of American 20 days.

4. Can I visit your factory online?
Yes, we can definitely show our workshop, warehouse, office online through WeChat, Whatsapp or Skype.

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 we get a better understanding.


Communication knows no boundaries, no matter where you are. If you have any requests, please feel free to contact us at anytime!