API 5CT Pup Joint is a commonly used accessory in industrial pipeline connections, essentially a short section of tubing employed to connect longer tubing strings. It finds frequent application in petroleum extraction processes.
The tubing nipple conforms to the API 5CT standards, with specifications ranging from 1.9" to 4-1/2". Available thread types include EU (External Upset), NU (Non-Upset), and P (Integral Joint).
Standard steel grades are J55, K55, N80, L80, and P110, and the typical length varies from 2 FT to 20 FT.
Specification
Casing Pup Joints:
Outside Diameter: 4 ½ inch – 13 3/8 inch
Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12 ft
Grades: H40, J55, K55, N80, L80 T95, C110, P110
Connections: SC, LC, BC, Semi Premium, and Premium
Tubing Pup Joints:
Sizes: 2 ⅜ inch – 4 ½ inch
Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12 ft
Grades: J-55, N-80, L-80, P-110
Connections EU (external-upset) and NU (non-upset)
