8 1/2′′ Tricone Rock Drill Bit/TCI Tricone Bit/Oil Well Drill Bit

• Customization: Available
• Type: Core Drill
• Usage: Metal Drilling, Masonry Drilling, Well Drilling, Wood Drilling
• Model NO.: 8 1/2′′
• Certification: API
• Type No: Types of Drill Bits
• Name: Drill Bits Tricone
• China: China Rock Drill Bits
• Bit: Step Drill Bit
• Drill Bit: China Masonry Drill Bit
• Supplier: Drill Bits Set Supplier
• Sale: China Drilling Bit Sale
• Item: Tricone Rotary Drill Bits
• Item No: Tricone Roller Cone Drill Bits
• Drilling: Tricone Bit for Well Drilling
• Transport Package: Wooden Box
• Specification: 8 1/2"
• Trademark: ROSCHEN
• Origin: China
• HS Code: 843143210
• Production Capacity: 3000

Product Description

8 1/2 inch tricone drill bits 
 
Product Description   

size	81/2''
IADC	537
WOB(KN/MM)	0.45-1.0
RPM(R/MIN)	120-50
Thread connection	41/2''reg pin
Weight	38Kg
MOQ	1PCS
Suitable formation	mediu soft with low compressive stength and harder abrasive,stringers,such as hard shalehard gypsolyte,soft limestone sandstone and dolomite with stringers,etc
Note	other sizes and IADC is avaiable

The advantage of using a tricone bit: 
 
1. There is a tri cone suitable for any formation 2. Tricone bits are versatile and can handle changing formations
3. Tricones are reasonably priced with long life and good rate of drilling 
 
Depending on ur application,we can provide u with new,rerun or premium oil field quality tricone bits, 
the difference between a premium oil field tricone bit and nonpremium oil well quality tricone is that the roller cones have high end sealed bearings: extremely high quality tungsten carbide and offer diamond gauge protection throughout the drill bit. These roller cone bits are designed to go to extreme depths in extreme conditions and in situations where they cannot fail.
 
Our tci tricone bit range in size from 3" to 26"
 
Our mill tooth tricone bit range in size from 3" to 26"
 
 
The main structure parameter of tricone bits           
 

Bit sizes		Std API pin shank(inches)	Jet nozzle size (mm)
mm	Inches		Diamter	Length	Nozzle diameter
95.2-107.9	3 3/4-4 1/4	2 3/8REG	20.3	17.5	4~10
120.6	4 3/4	2 7/8REG
142.9-171.4	5 5/8-6 3/4	3 1/2REG	23.6	19	5~16
190.5-200.0	7 1/2-7 7/8	4 1/2REG	29.8	19	7~18
212.7-222.2	8 3/8-8 3/4	4 1/2REG	33	27	8~20
241.3-311.1	9 1/2-12 1/4	6 5/8REG
444.5-660.4	17 1/2-26	7 5/8REG	33(41)	27	8~20

Suitable formations:
 

Rock formation		Bit type	Bit size		Drilling weight	Rotary speed
			mm	inch	N/mm	r/mm
Very soft	Soft marl, clays, sands, salts etc.	1	187.3-346.1	7 3/8-13 5/8	441-735	120-50
			444.5-660.4	17 1/2-26	196-686	90-60
Soft	Clays, soft shale, marl, sands, salts etc.	2	95.2-174.6	3 3/4-6 7/8	245-490	100-50
			187.3-346.1	7 3/8 13 5/8	490-784	90-40
			444.5-660.4	17 1/2-26	196-686	60-40
Medium soft	Shale, marl sandstone, soft limestone etc.	3	95.2-174.6	3 3/4-6 7/8	245-490	90-50
			187.3-311.1	7 3/8-12 1/4	490-784	80-40
			444.5-660.4	17 1/2-26	196-686	60-40
medium	Hard shale , limestone, medium/hard sandstone etc	4	95.2-174.6	3 3/4-6 7/8	294-539	80-60
			187.3-241.1	7 3/8-9 1/2	539-833	60-40

Product photos





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