1. Seamless oil casing
2. Stadnard& steel grades: API 5CT J55, K55, N80-1/Q, L80, P110, etc.
3. Size range: OD: 114mm-508mm, W. T: 5.21mm-16.13mm
4. Manufacture process: hot rolled, cold-drawn
5. Delivery condition: Normalized, Quenchened+Tempered
6. End finish: Plain ends, short round thread, long round threads, Buttress thread, Extreme-line.
7. Coupling: available.
