Dredging grab is an effective tool that can be used underwater for dredging, and salvage of waterways such as silt, hard mud, iron plate sand, blasting reefs, and even sunken ships. This kind of grab has high production efficiency, it is sturdy and durable, easy to maintain, and easy to operate. It can excellently complete the grabbing work in harsh working conditions that are not visible. The inner pulley of the grab adopts multiple seals to ensure that the grab will not seep into water and sediment even in tens of meters of seawater. Our company have dozens of series products with lifting capacities ranging from 6t to 200t. This kind of grab is suitable for single rope, double rope, or four rope cranes.