Casing And Tubing Coupling
Classification :
PRODUCT DETAILS
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 |
Specification
Casing Couplings Short Thread Specifications:
Casing Couplings |
Casing Size OD (inches) |
Coupling Size OD (inches) |
Length (inches) |
Weight per Coupling (lbs) |
Palletized Carton Quantity |
4-1/2 |
5.000 |
6.250 |
8.05 |
343 |
Products Display
Warehouse storage
Our products has been wildly sold to Northeast, North China, East China, Europe, Middle East, Southeast Asia, Australia and ect...Total area of our cooperation factory is approximately 58, 000 square meters, and registered capital is RMB 10 million Yuan, and fixed assets is RMB 50 million Yuan.
Packaging and shipping
The company specializes in selling steel, with best-selling products including PPGI, galvanized steel coil, steel plate, stainless steel plate, seamless welded steel pipe, aluminum coil, angle steel, H-shaped steel beam, and threaded steel. The product performance indicators have reached the advanced level in China. Our products have been widely sold to Northeast, North China, East China, Europe, the Middle East, Southeast Asia, Australia, etc
Customer communication
With the strategic thought of striving for survival on the basis of quality and development on the basis of benefit, adhering to management idea of "faith, practical, innovation, and development", we have courage to challenge, and keep continuous innovation in the competition.
Application area
We also do our unremitting efforts to fight bravely for creating a national brand and international brand. Holding to the intellectual businessman of style and the spirit of sincerity, all staff of our company are willing to cooperate and develop together with you.
COOPERATIVE PARTNER
FAQ
What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
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