They are to be fitted on cranes with one single drum ( mainly ship board cranes or harbour cranes). The grabs are manufactured of high wear resistant steel. These Electro Hydraulic Orange Peel Grab uses the hydraulic system to control the open and close. It is mainly used at port, sea port, steel plant, garbage handling factory, etc. When the maximum pressure is reached, the flow rate of the pump is extremely low, thereby greatly reducing the overflow, reducing the energy consumption, reducing the oil temperature, and using the continuous work for a long time, which greatly improves the production efficiency.