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Extended Casing Tong
Related introduction
Casing tongs are used to tighten or unscrew casing and casing coupling threads in petroleum drilling operations. Products are designed and manufactured according to API Speck 7K specifications.
| Hinge clamp number | Fastening diameter | Rated torque KN.m | |
| in | mm | ||
| 9、8 | 133/8~141/2 | 340~368.3 | 35 |
| 8、7 | 141/2~16 | 368.3~406.4 | |
| 8、9、9 | 16~171/2 | 406.4~444.5 | |
| 8、9、7 | 171/2~19 | 444.5~482.6 | |
| 7、8、7 | 19~20 | 482.6~508 | |
| 9、8、9、7 | 20~211/2 | 508~546.1 | |
| 9、7、8、7 | 211/2~23 | 546.1~584.2 | |
| 9、9、8、7、7 | 24~251/2 | 609.6~647.7 | |
| 9、8、7、7、7 | 251/2~27 | 647.7~685.8 | |
| 8、7、7、7、7 | 27~281/2 | 685.8~723.9 | |
| 9、9、8、7、7、8 | 281/2~30 | 723.9~762 | |
| 9、7、7、7、7、8 | 30 | 762 | |
| Hinge clamp number | Fastening diameter | Rated torque KN.m | |
| in | mm | ||
| 9、8、7、7、7 | 251/2~27 | 647.7~685.8 | 55 |
| 8、7、7、7、7 | 27~281/2 | 685.8~723.9 | |
| 9、9、7、7、7、8 | 281/2~30 | 723.9~762 | |
| 9、7、7、7、7、8 | 30~315/8 | 762~803.3 | |
| 8、9、8、9、7、7、7 | 311/2~33 | 800.1~838.2 | |
| 7、9、8、9、9、7、8、9 | 33~341/2 | 828.2~876.3 | |
| 8、7、7、9、9、8、8、8 | 341/2~36 | 876.3~914.4 | |
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