A top drive is a hydraulic or electric motor suspended in the derrick of a drilling rig, which rotates the drill string and bit and is used in the act...
Características Caja de cambios:1) Ajuste de alta precisión2) Funcionamiento constante3) Menos ruido y menor aumento de la temperatura4) Estructura ...
750 HP All American 7 Axle Work Over Rig with Double Drum capable to Drilling jobs also. Comes with 750HP double drum draw works, with drilling depth ...