| Standard | API Spec 5CT / ISO 11960 | API Spec 5CT / ISO 11960 |
| Outside Diameter | 4½″ – 20″ (114.3 – 508 mm) | 1.050″ – 5½″ (26.7 – 139.7 mm) |
| Wall Thickness | Typically 5.21 – 16.13 mm (varies by size & weight) | Typically 2.87 – 9.52 mm (varies by size & weight) |
| Length Range | Range 2 & Range 3 | Range 2 (commonly R2) |
| Steel Grades | H40, J55, K55, N80-1/N80Q, L80, C90, T95, P110, Q125; 13Cr available | H40, J55, K55, N80, L80, C90, T95, P110, Q125 |
| Sour Service Grades | L80, C90, T95 (controlled hardness, SSC-resistant) | L80, C90, T95 |
| End Finish / Connection | STC, LTC, BTC, Premium gas-tight | NUE, EUE, Premium gas-tight |
| Product Specification Level | PSL1 / PSL2 | PSL1 / PSL2 |
| Manufacturing Route | Seamless / ERW | Seamless / ERW |
| Inspection & Testing | Hydrostatic test per API 5CT; NDT (UT) after hydrotest; drift test | Hydrostatic test; NDT; drift test |
| Typical Export Form | Black bare / coated; with couplings; 6–18 m joints | Black bare / coated; with couplings; R2 joints |