Couplings are used to connect two joints of pipe together.Couplings are short length of heavy wall pipe with the same thread on each end.
TUBING COUPLING
SIZE RANGE: 2 3/8" - 4 1/2"
GRADE: J55/K55/L80/N80/P110
THREAD TYPE: NUE/EUE
CASING COUPLING
SIZE RANGE: 4 1/2" - 20"
GRADE: J55/K55/L80/N80/P110
THREAD TYPE: STC/LTC/BTC