API 5CT NUE Tubing Coupling


  • Material Grade:J55、K55、N80、L80、P110
  • Size:1.9″、2-3/8″、2-7/8″、3-1/2″、4″、4-1/2″
  • Length Range:< R1 (6.10m)
  • Thread Type: NUE

Non-upset tubing(NUE) refers to the pipe end without the extra thick and straight thread and collar. Non-upset tubing is used much less than EUE tubing and the joint strength is substantially less. The tubing joints are designed to suit a certain well type, based on the underground conditions and fluids. The NUE coupling joint diameter of is less than that of EUE, which offers some advantages when clearance is small. API NUE joints are available in sizes of 1.050 to 4.500 in.

API 5CT NUE Tubing Coupling Dimension

Tubing Size, OD Casing Size OD (inches)


Coupling Size OD (inches)


Length (inches)


Weight per Coupling (lbs) Palletized Carton Quantity Palletized Carton Weight
API NUE Tubing Couplings 1.90 2.200 3.750 1.85
2-3/8 2.875 4.500 2.82 1,512 4264
2-7/8 3.500 5.500 5.15 800 4120
3-1/2 4.250 5.625 8.17 502 4101
4 4.75 5.75 9.57 392
4-1/2 5.200 6.500 10.76 252 2712


WLD steel supply and stock the EUE tubing coupling in accordance with API 5CT/5B range the outer diameter from 77.80mm to 141.30mm and other specialty tubing couplings. We can supply OCTG tubing and casing pipe with standard pipe-ends such as upset tubing and non-upset tubing. We also can provide customers with products based on their specified technical requirements.