Detailed Product Description Product DescriptionAPI 5ct Oil Casing Pipe1. Standard: API 5CT-0735 & ISO9001: 2000. 2. Grade: K55, J55, N80, H40, L80, M65, C90, C95, T95, P110, Q125. 3. OD: 114.30 - 339.72 mm (4.5000 -13.375 in) 4. WT: 5.21 -13.06 mm (0.205 -0.514 in) 5. Length: R1/R2/R3