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Manual Tongs Type DB
相關介紹
Manual Tongs Type DB are necessary tools applied to make up and break out pipes. Changing lug jaws and latch steps can adjust different handling sizes of the tongs. They are designed and manufactured according to API Spec 7K Specification for drilling and well servicing equipment.
| No. of Latch Lug Jaw | Shaft pin hole number | Size Range | Rated Torque(KN.m) | |
| in | mm | |||
| 1# | Ⅰ | 31/2~6 | 88.9~152 | 90 |
| Ⅱ | 53/4~7 | 146~178 | ||
| Ⅲ | 65/8~81/4 | 168~210 | ||
| 2# | Ⅰ | 8~95/8 | 203~244 | |
| Ⅱ | 105/8~111/4 | 270~286 | ||
| 3# | Ⅰ | 113/4~123/4 | 298~324 | 55 |
| Ⅱ | 133/8~143/8 | 340~365 | ||
| 4# | Ⅱ | 16~17 | 406~432 | |
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