- API 5CT K55 roj casing yeeb nkab feem ntau yog siv los ua cov yeeb nkab uas txo qis rau hauv lub qhov dej rau kev tsim cov kua dej lossis cov kua tshuaj. Tom qab drilling tiav lawm, cov roj av thiab cov nkev roj raug thauj los ntawm cov roj thiab roj txheej mus rau saum npoo.
- API 5CT K55 Casing Tubing Chemical Composition, pawg pawg (%)
| Qib | Hom | C | Mn | Mo | Cr | Nim max. | Cu max. | P max. | S max. | Si max. | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | min. | max. | min. | max. | |||||||
|
K55 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0.03 |
0.03 |
- |
- API 5CT K55 Casing Tubing Mechanical Properties
| Txuj | Hom | Tensile zog MPa | Yield zog MPa | Hardness Max. |
|---|---|---|---|---|
| API SPEC 5CT UAS | K55 | Ntau dua lossis sib npaug li 517 | Ntau dua lossis sib npaug rau 655 | --- |
