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B type manual tong, B 3 3/8"-13 3/8"/75; API Spec 7K is an essential tool in oil drilling operation to fasten or remove the screws of drill pipe and casing joint or coupling.It can be adjusted by changing latch lug jaws and latch steps.
The details are as bellow:
|
Latch Lug Jaw No. |
Gripping Range |
Torque max. |
||
|
in |
mm |
kN·m |
||
|
5a |
1 |
3.3/8" -4.1/8" |
85.7 ~ 104.8 |
55 |
|
2 |
4.1/8" - 5.1/4" |
104.8 ~ 133.4 |
||
|
5b |
1 |
4.1/4"-5.1/4" |
108 ~ 133.4 |
75 |
|
2 |
5" - 5.3/4" |
127 ~ 146.1 |
||
|
3 |
6" - 6.3/4" |
152.4 ~ 171.5 |
||
|
5b1 |
1 |
5.1/4" - 5.3/4" |
133.4 ~ 146.1 |
|
|
2 |
6" - 6.5/8" |
152.4 ~ 168.3 |
||
|
3 |
6.3/4" - 8" |
171.5 ~ 203.2 |
||
|
5c |
1 |
6.5/8" -7.3/8" |
168.3 ~ 187.3 |
|
|
2 |
7.3/8" - 8" |
187.3 ~ 203.2 |
55 |
|
|
3 |
8.1/2" - 8.5/8" |
215.9 ~ 219.1 |
||
|
5d |
1 |
8.1/2" - 9.5/8" |
215.9 ~ 244.5 |
|
|
2 |
10.5/8" - 10.3/4" |
269.9 ~ 273.1 |
||
|
5e |
1 |
11.3/4" |
298.5 |
|
|
2 |
12.3/4" |
323.9 |
||
|
5e3 |
1 |
13.3/8" |
339.7 |
|