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Type WWB manual tongs 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.
The details are as bellow:
| Latch Lug Jaw No. | Size Range | Torque kN.m |
|
| in | mm | ||
| 1# | 2.3/8" - 3.3/4" | 60.3 - 95.25 | 48 |
| 2# | 3.1/2" - 4.5/8" | 88.9 - 117.48 | |
| 3# | 4.1/2" - 5.3/4" | 114.3 - 146.05 | |
| 4# | 5.1/4" - 7.1/4" | 133.35 - 184.15 | |
| 5# | 6.7/8" - 8.7/8" | 174.63 - 219.08 | |
| 6# | 9" - 10.3/4" | 228.6 - 273.05 | 35 |