... , P110 pipe tubing and couplings 1)Size: O.D. ", 2-3/8", 2-7/8", 3-1/2", 4-1/2" 2) Grade: J55, N80, L80, C90, T95, P110 3) Wall thickness ... Tubing accord with API SPEC 5CT standard, and we get the right to use the API 5CT . ODWall thicknessMassIDEndsGradeinchmminchmmKg/mlb/ftmmNU,EUJ55,L80,N80,C90,T95P1102-3 ...