8 1/2" Tricone Rock Drill Bits for Oil Drilling

• Type: Core Drill
• Usage: Metal Drilling, Masonry Drilling, Well Drilling, Wood Drilling
• Certification: API
• Name: Tricone Drill Bit
• Use: Africa Mining
• Exploration: Australia Exploration
• Model NO.: 8 1/2"
• Mining: Australia Mining
• Model No: Mining Exploration Core Drilling
• Bits: Tricone Drill Bits Spare Part
• Drill Bits: TCI Tricone Drill Bits
• China: China Tricone Bits
• Sale: Tricone Bit Sale
• Manufacturer: Tricone Roller Cone Drill Bits Manuf
• Transport Package: Wooden Box
• Specification: 8 1/2"
• Trademark: ROSCHEN
• Origin: China
• HS Code: 843143210
• Production Capacity: 3000

Product Description

8 1/2" Tricone Rock Drill Bits for Oil Drilling

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Tricone Roller bit is the most widely used drilling bit. When the roller cone bit is working, the cutting teeth alternately contact the bottom of the well, the torque of breaking the rock is small, the contact area between the cutting tooth and the bottom of the well is small, the specific pressure is higher, and it is easy to eat into the formation; the total working length of the working blade is large, thus relatively reducing the wear. Roller bit can adapt to a variety of formations from soft to hard. 

According to the number of cones, it can be divided into single-cone bit, tri-cone bit, and assembled multi-cone bit. According to the cutting material can be divided into steel teeth (milled teeth) and insert tooth bit.



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Product Description: 
 

Tricone Roller Rock Drill Bits	Basical Parameter
	Bit Size	8 1/2"(215.9MM)
	IADC Code	737G
	Connection	4 1/2"API reg pin
	Nozzle Qty	3NZ
	Make up Torque(KN.m)	16.3~21.7
	Operating Parameter
	Rotary Speed(rpm)	70~40
	Weight on Bit(KN/MM)	0.7~1.2
	Formation	Hard with high abrasiveness such as hard limestone, dolomite,firm sands,etc

 

TRICONE DRILL BITS - STANDARD CONNECTION SIZES
SIZE (inch)	STANDARD PIN CONNECTION	MAKE UP TORQUE
3 1/2	2 3/8 API	4.1~4.7
4 1/2 to 4 3/4 inch	2 7/8 API	6.1~7.5
5 1/2 to 6 3/4 inch	3 1/2 API	9.5~12.2
7 1/2 to 9 1/2 inch	4 1/2 API	16.3~21.7
9 5/8 to 13 3/4 inch	6 5/8 API	38~43.4
14 5/8 to 26 inch	7 5/8 API	46.1~54.2

Product Pictures











FAQ

Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.

Q: How about the delivery terms?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.

Q: How about discount?
A: Price is based on products and order quantity.

Q: Do you accept sample order?
A: Yes sure, please contact us for details.

Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.

Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, Roschen always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.






For more information please contact:


 
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED  
 
 
Website: http://roschen.en.made-in-china.com 
 ; http://roschen.en.made-in-china.com 
http://roschen.en.made-in-china.com