WUXI EASTSUN TRADE CO., LTD
WUXI EASTSUN TRADE CO., LTD JIANGSU TAISHUN ENERGY TECHNOLOGY DEVELOPMENT CO., LTD
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Couplings are used to connect two joints of coupling or casing pipe together.
Couplings are short length of heavy wall pipe with the same threads on each end.
EASTSUN manufactures coupling and casing coupling strictly comply with API 5CT latest standard.
| Size | Grade | STC | LTC | BTC | |
| (in) | Normal | SCC | |||
| 4 1/2 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 5 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 5 1/2 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 6 5/8 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 7 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 7 5/8 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 8 5/8 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 9 5/8 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | Yes |
| 10 3/4 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | |
| 11 3/4 | J55/K55/N80/L80/P110 | Yes | Yes | ||
| 13 3/8 | J55/K55/N80/L80/P110 | Yes | Yes | ||
| 16 | J55/K55/N80/L80/P110 | Yes | Yes | ||
| 18 5/8 | J55/K55/N80/L80/P110 | Yes | Yes | ||
| 20 | J55/K55/N80/L80/P110 | Yes | Yes | Yes | |
