Casing K55
Casing by Strength Group
API 5CT
Casing K55 is supplied to API 5CT. Available in K55. Size range: OD 4½″–20″ (114–508 mm); R2/R3. Typical application: Group 1 — higher strength than J55, conductor / intermediate string. Made to order with full mill certification (EN 10204 3.1) for oil & gas projects across the Middle East.
| Standard | API 5CT |
| Grades / classes | K55 |
| Sizes / range | OD 4½″–20″ (114–508 mm); R2/R3 |
| Sub-category | Casing by Strength Group |
| Category | OCTG Casing |
| Application | Group 1 — higher strength than J55, conductor / intermediate string |
Related standards