Q 3½~*7/*0 (type DB)manual
tong is an essential tool in oil drilling operation to fasten or
remove the screws of drill pipe and casing joint or
coupling.Applicable
column range: 3½in~*7in.. Maximum torque is *0kN • m. Column and
torque of different diameterscan
be adjusted by changing the latch lug jaws or latch
steps.
