Oil Tubing: Standard: API 5CT Grade: J55, K55, N80, L80, C90, C95, P110 Oil tubing size: 1.9"-4.5" Oil Tubing:Standard : API 5CTGrade: J55, K55, N80, L80, C90, C95, P110Size: 1.9"--4.5"We could provide you Oil Tubing with fine quality at positive price. If you have any interest, welcome to contact with me!