Single arm rotary boat/raft davit(with crane)
This equipment uses hydraulic drive rotary type,by its own gravity of the boat to make it down to the ...
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 ...