Supplier of API-5CT Couplings, Casing Pipe and Tubing Pipe, Reaching The Most Stringent Standards.

API EUE Tubing Couplings

The API external-upset-end (EUE) tubing connection is widely used because it is a good, serviceable connection in most wells. The EUE joint has a designed joint strength in tension and pressure strength greater than that of the pipe body and, therefore, is considered a 100% joint efficient connection.

To improve the seal performance of API EUE tubing in high-pressure service, a grooved coupling, which accepts nonmetallic seal rings, is sometimes used in the coupling (see API Spec. 5CT SR 13).

Designed in accordance with API 5CT/5B and are made of good seamless steel. EUE petroleum tubing coupling cover the outer diameter from 77.80mm to 141.30mm, that is bigger than the outer diameter of the non upset threaded end product.

We carry size range of 2-3/8”, 2-7/8″, 3-1/2″,4″ and 4-1/2″ in J55, K55, N80, P110 grade. All of our couplings meet the API Specifications 5CT/5B.

Couplings are short lengths of pipe used to connect 2 joints of tubing or casing. They come with painted colour codes on their external surface to indicate their grades.

On ground inventories are available from our Houston Inventory warehouse. API couplings are know for it’s high efficiency and long service life.

1. Size: 2-3/8” 2-7/8″, 3-1/2”, 4″, 4-1/2″
2. Standard: API 5CT /5B
3. Type: EUE
4. Grade:J55/K55/N80/L80/P110
5. Packaging: wooden pallet, tight wrapped /W paper carton

Tubing Couplings Size And Dimension

Size Type of Thread O.D*L (mm) Weight(kg)
2-3/8" NUE 73.02*107.95 1.28
2-3/8" EUE 77.80*132.82 1.55
2-7/8" NUE 88.90*130.18 2.34
2-7/8" EUE 93.17*133.35 2.40
3-1/2" NUE 107.95*142.88 3.71
3-1/2" EUE 114.30*146.05 4.10
4" NUE 120.65*146.05 4.35
4" EUE 127.00*152.40 4.82
4-1/2" NUE 132.08*155.58 4.89
4-1/2" EUE 141.30*158.75 6.05