Dredging grabs are required to excavate hard materials such as rocks on the seabed, therefore the dredging grabs have a high self-weight, a high multiplication of the opening and closing wire rope in the bucket and a high excavation force.

Dredging grabs with high self-weight, high multiplication of the opening and closing wire rope in the bucket, and high digging forces.

QSHI calculates well and designs dredging grabs to support customers' excavation and dredging work more effectively.