Type DB Manual Tong
The type DB manual tongs are designed and manufactured in accordance with the API Spec 7K《Specification for Drilling and Well Servicing Equipment》and the National Standard for the Petroleum Gas Industry SY/T 5035《Elevator Links、Elevators and Tongs》which is a useful tool applied to make up and break out drill pipes, coupling hoop of the drill pipe、joint、casings、casing hoops etc. When raise drill tool up and fall it down. Changing hinge jaws and handling shoulders of latch lug jaws can adjust the handling size of the tongs. According to the different handling size torque’s tongs can be ascertain.
Technical Specifications:
|
Latch Lug Jaw |
Gripping Range |
Torque max. |
|||
|
Latch Lug Jaw No. |
Axle Pin Hole No. |
in |
mm |
kN· m |
|
|
1 |
Latch Lug Jaw |
|
3 1/2-4 1/2 |
89~114 |
90 |
|
4 1/2-6 |
114~152 |
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|
|
57 |
127~178 |
|||
|
|
6-8 1/4 |
152~210 |
|||
|
2 |
|
8-9 5/8 |
203~244 |
||
|
|
10 5/8-11 1/4 |
270~286 |
|||
|
3 |
Hinge Jaw |
|
11 3/4-12 3/4 |
298~324 |
55 |
|
|
13 3/8-14 3/8 |
340~365 |
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|
4 |
|
16-17 |
406~432 |
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