| Application | Casing/Couping | 
|---|---|
| Grade | H40、J55、 K55、N80-1 | 
| Standard | API Spec 5CT | 
| Certification | Ф168.28~Ф540Х7.32~30 | 
| WTK OD | >159 ~177.8 | >177.8 ~219 | >219 ~273 | >273 ~325 | >325 ~356 | >356 ~377 | >377 ~426 | >426 ~508 | >508 ~720 | 
|---|---|---|---|---|---|---|---|---|---|
| ≥4.0~5.0 | 0 | 0 | 0 | 0 | 0 | ||||
| >5.0~7.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| >7.0~8.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| >8.0~10.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
| >10.5~13.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
| >13.0~20.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
| >20.0~25.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| >25.0~30.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| >30.0~35.0 | 0 | 0 | 0 | 0 | |||||
| >35.0~40.0 | 0 | 0 | 0 |