API 5CT NUE EUE Oil Tubing Coupling
1. Size: 1.9 inch to 4-1/2 inch; 2. End Type: NUE and EUE; 3. Steel Grade: J55, K55, N80-1, N80-Q, L80-9Cr/13Cr, C95, P110
4. Length: as per API Spec 5CT and API Spec 5B