API Coupling refers to the steel couplings that used in connecting casing pipe and tubing. Also known by OCTG coupling, it is usually manufactured in seamless type, material grade same with the pipe body (API 5CT K55/J55, N80, L80, P110 etc), same PSL or providing higher grades than requested. Same heat treatment also applicable, except there isan special requirements.
| Figure | CWP | Size |
|---|---|---|
| 50 | 500 PSI/34.5 bar | 5″ |
| 100 | 1000 PSI/68.9 bar | 2″, 3″, 4″, 5″, 6″, 8″ |
| 200 | 2000 PSI/137.9 bar | 1″, 1.5″, 2″, 2.5″, 3″, 4″, 5″, 6″, 8″, 10″ |
| 206 | 2000 PSI/137.9 bar | 1″, 1.5″, 2″, 2.5″, 3″, 4″, 5″, 6″, 8″, 10″ |
| 400 | 4000 PSI/275.8 bar | 2″, 3″, 4″, 5″, 12″ |
| 400 | 2500 PSI/172.4 bar | 2″, 3″, 4″, 5″, 12″ |
| 406 | 4000 PSI/275.8 bar | 3″ |
| 406 | 2500 PSI/172.4 bar | 5″ |
| 600 | 6000 PSI/413.7 bar | 1″, 2″, 4″ |
| 602 | 6000 PSI/413.7 bar | 1″, 2″, 4″, 5″, 6″ |
| 1002 | 10,000 PSI/689.5 bar | 1″, 1.5″, 2″, 3″, 4″ |
| 1002 | 7500 PSI/517.1 bar | 5″, 6″ |
| 1003 | 10,000 PSI/689.5 bar | 3″, 4″ |
| 1003 | 7500 PSI/517.1 bar | 5″, 6″ |
| 1502 | 15,000 PSI/1034.2 bar | 1″, 1.5″, 2″, 3″, 4″, 5″, 6″ |
| 2002 | 20,000 PSI/1379.0 bar | 2″ |
| Figure | CWP | Size |
|---|---|---|
| 1002 | 7500 PSI/517.1 bar | 3″, 4″ |
| 1002 | 5000 PSI/344.7 bar | 5″, 6″ |
| 1502 | 10,000 PSI/689.5 bar | 2″, 3″, 4″, 5″, 6″ |
| 2202 | 15,000 PSI/1034.2 bar | 2″ |
