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Casing And Tubing Coupling
Classification :
PRODUCT DETAILS
Keyword: Steel Plate
Description
About Tubing coupling
Normally tubing coupling OD maximum is 4 1/2”, as the tubing pipe is applied for the drilling activities (Inside the tubing is the sucker rod to drill/pump the oil), couplings type is more various and rigorous than casing, mostly used is thicken type upset coupling (Internal upset and external upset), for short is EUE coupling, it is the most favorable in tubing connections. Tubing with EU end (EUE) coupling connection also called UPTBG. Because of the end of the tubing is thickened (upset), the connecting stress is better than buttress coupling.
Buttress coupling another type used for tubing connections, it has the same thickness of the pipe body, called NU end (NUE)tubing or TBG.
Features
The oil tubing coupling can solve the problem of fatigue fracture in the existing coupling due to stress concentration. Oil tubing end is connected to the inside wall of the coupling in a tapered thread. The coupling body end and oil tubing are connected with same thread pitch flat thread. The coupling is not easy to produce fatigue fracture, and has good connection effect. It can prevent the accident of oil well pipe string break effectively.
About Casing coupling
Casing coupling is for the dimensions more than 4 1/2 inch. Differently than tubing coupling is, casing coupling normally does not need to be thickened (Non-upset), which means no upset casing coupling, so it has following types:
• BTC: Buttress coupling
• LTC: Long buttress coupling
• STC: Short buttress coupling
All three types has same thickness of the casing pipe body, just have different lengths.
The oil casing coupling is a necessary piece used to connect the two casing. The coupling manufacturing method is the same as seamless pipe. The steel pipe ends with internal thread to connect with the upper and lower casing. In order to ensure the joint tightness, the precision of screw thread is strictly required.
Seamless and ERW Casing
|
Specification |
API 5CT |
|
Grades |
K55, N80, L80, C95, P110, Chrome, J55(Modified), J55 (API), PS80 |
|
Special Grades |
For sour services and for deep well with high collapse properties |
|
Dimensions |
OD 4" - 26" WT - 0.2 -0.5" |
|
Length range |
1, 2 or 3 |
|
Thread connections |
API (STC and LTC), BTC, extreme line, etc. |
Seamless and ERW Tubing
|
Specification |
API 5CT |
|
Grades |
J55 (API) J55(Modified), N80, L80, L80 13Cr, P110, Q125, H40 (API) |
|
Thread connections |
API 5B - Last Edition or Premium, EUE, NUE, special seal, metal-to-metal seal and VAGT |
Packing and shipping
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Customer conversation
In The Future The Company Will as Always Adhering To The customer As The Buddha Are Proud Of The Service Business Philosophy Adhere To The "Create, Win Win" Spirit O enterprise Adherence To The Restraining. Provide The Most Valuable Industry Services. Is committed To Become China's Best Solution External Steel.

Application field
Products are mostly used in construction sites, aviation, shipbuilding, precision instruments, petrochemical and other industries.

FAQ
Q1:Can you send samples?
A:Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.
Q2:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
Q3:What are the shipping ports?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.
Q4:How do you control quality ?
A:We provide Factory Test Report, also support Third Party Inspection.
Q5:How many countries you already exported ?
A:Exported to more than 50 countries mainly from Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Chile, Mexico, Venezuela, Argentina, Kuwait, Saudi Arabia, UAE, Sri Lanka, Indonesia, Bangladesh, Turkey, India, etc.
Q6:How long does your delivery time take?
A:In general, our delivery time is within 30-45 days, and may be delayed if the demand is extremely large or special circumstances occur.
Q7:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory. However, some of the plants are not open to the public.
Q8:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.
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