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Spot 108mm Used Drill Collar in Stock for Water Downhole Tools
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Product: Views:159Spot 108mm Used Drill Collar in Stock for Water Downhole Tools 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2017-07-27 13:18
Spot 108mm used drill collar in stock for water downhole tools
Product Description
oil drill collar 
1.Reliable bearing
2.reasonable price
3.quality assurance
4.Many models

Descriptions of oil drill collar:
1) Standard: API 7-1
2) Size: 3 1/8"--11"
3) Length: 10'--31'
4) Material: AISI 4145H,AISI4145H mod, Mon-mag material
The spiral drill collars are made of 4145H modified chromium-molybdenum alloy steel according to API Spec.7 and SY/T5144.All threads can be phosphated, copperized or cold worked.All threads are machined with CNC Lathed-Double-shouldered and a special thread, the max diameter of drill collar is 14 inch.
The details of oil drill collar: 
1. Material: Non magnetic steel 
2. Shape: It is the round pipe with smooth surface and thick wall, and the both ends are machined screw 
thread for connection. 
3. Use: It is mainly used for the inspection in the process of petroleum drilling. 
4. Standard: API Spec 7-1 or SY/T5144 Standard. 
5. Inspection&Test: When producing, traceability are maintained from the receipt of raw material to completion of final products, and serial numbers are die-stamped on each workpiece body. During each manufacturing process, inspection and test are performed. 
6. Magnetic permeability(MPS=1×105/4∏A/m) 
 1&rpar;&period; Average&colon; Ur<1&period;010&period; 
 2&rpar;&period; Magnetic Field Gradient&colon; ΔB≤0&period;05μT
Main specifications of oil drill collar
Depth of cut
Depth of cut
mm in
98&period;4 3 7&sol;8 4&period;0±0&period;79 914  
101&period;6~111&period;1 4~4 3&sol;8 4&period;8±0&period;79 914
114&period;3~130&period;2 4 1&sol;2~5 1&sol;8 5&period;6±0&period;79 965
133&period;4~146&period;1 5 1&sol;4~5 3&sol;4 6&period;4±0&period;79 1067
149&period;2~161&period;9 5 7&sol;8~6 3&sol;8 7&period;1±1&period;59 1067
165&period;1~177&period;8 6 1&sol;2~7 7&period;9±1&period;59 1168
181&period;0~200&period;0 7 1&sol;8~7 7&sol;8 8&period;7±1&period;59 1626 5&period;6±0&period;79
203&period;2~225&period;4 8~8 7&sol;8 9&period;5±1&period;59 1727 6&period;4±0&period;79
228&period;6~250&period;8 9~9 7&sol;8 10&period;3±2&period;37 1829 7&period;1±1&period;59
254&period;0~276&period;2 10~10 7&sol;8 11&period;1±2&period;37 1930 7&period;9±1&period;59
279&period;4 11 11&period;9±2&period;37 2037 8&period;7±1&period;59
Note&colon;spiral drill collars has spiral grooves&comma; right hand&comma; well distributes
Oil drill collar

Our Services
1&period;We will keep track of each customer to get the feedback of product quality and service&period; And we will make an amendment according to your feedback&period;
2&period;If the product size is wrong&comma; we will send the right one freely&period;
3&period;We guarantee the high quality&period; Please feel free to contact us if you found any damage&period; We will solve the 
problems ASAP&period;
4&period;We can provide product repair services&period;
The optimal price&comma; the best quality&comma; the fastest speed&comma; the best service&period;Your every piece of advice to us we 
will be very seriously treatment&period; If you have any suggestion to us&comma; please surely tell us by mail in a timely 
manner You are not just a visitor&comma; but our partner in common progress&period; 
Sincerely hope to cooperate with you&period; 
1&period; How to order the products&quest; 
Send the inquiry with detail item description or with Model number&period; 
If there is no packing demand we take it as sea-way packing&period; 
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding&period; 
2&period; About lead time and shipping time&quest; 
Answer &colon; 
The lead time depend on quantity of order&period; Usually shipped by sea&comma; small order or urgent order we can send you by air after received your agreement&period; 
According the distance from china to your port&comma; usually from China to European about 25 days&period; To West of American 20 days&period;
3&period;Can I expect a quality products&quest; 
Answer &colon; 
Yes&period; All our activities are accredited to ISO 9001&colon;2008 and API&comma; both in products and services&comma; at the same time&comma; mature production technology ensuring the quality satisfy international request&period; 
Welcome visit our page&comma; any need pls feel free to contact me&period; 
I'm Bonnie&comma; always at your service&excl;