Semi-Automatic spreaders are fixed to the hooks of gantry, bridge and portal cranes. Twist lock control is carried out mechanically by means of special rope pulling. Hooking/ Unhooking is carried out without help of crane workers. Simplicity and convenience of spreader installation allow converting from hook crane into containers crane in a short time.
There is no necessity to arrange power supply for the spreader and to update the crane control circuit.
Pronk Multiservice provides container spreader (semi-automatic) 20ft and 40ft on sale or rental basis.