Type C tongs is a necessary for buck-on and buck-off all kinds of string pipes during the process of workover.
The fastening tongs size changed by replacement of fastening tongs and shoulders.
Diameters range：2.3/8-10.3/4in；Max torque：48kN.m；
Design and manufacture by API SPEC 7k.
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Fastening tongs
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Short tongs
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Hinge tongs
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Diameters range
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Max torque
kN.m
|
|
in
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mm
|
|
1#
|
1#
|
∕
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2.3/8-3.668
|
60.33-93.17
|
48
|
|
2#
|
2.7/8-4.1/4
|
73.03-108
|
|
3#
|
3.1/2-5.1/4
|
88.9-133.35
|
|
4#
|
5.1/2-7
|
139.97-177.8
|
|
5#
|
2#
|
1#
|
7-8.5/8
|
177.8-219.08
|
|
6#
|
2#
|
9.5/8-10.3/4
|
244.5-273.05
|
|
