EUE 3-1/2 inch Oil Tubing Coupling for Coring Tools ,  API 5CT API 5B Standard
 

Specifications: 

1. Size: 2-3/8" , 2-7/8", 3-1/2", 4", 4-1/2" 
2. Standard: API 5CT, API 5B 
3. Type: EUE 
4. Grade: J55, K55, N80, P110 
 

The API external-upset-end (EUE) tubing connection is widely used because it is good, serviceable connection in most wells. The EUE joint has a designed joint strength in tension and pressure strenght greater than that of the pipe body and, therefore, is considered a 100% joint efficient connection. 
 
To improve the seal perforemance of API EUE tubing in high-pressure service, a grooved coupling ,which accepts nonmetiallic seal rings, is sometimes used in teh coupling (see API SPEC 5CTSR13) 
 
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 specification 5CT/5B. 
 
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 with plastic film or paper carton

 

Tubing Coupling Size and Dimension: