It is mainly designed for handling of powder and fine bulk materials such as chemicals, fertilizer, grain, coal, coke, iron ore, sand, particle construction materials and smashed rocks etc. It has been widely used in ports, steel plants, power stations, ships and garbage treatment plants, and is used together with tower cranes, ship cranes, ship unloaders, traveling cranes and other type of cranes. The grab has its own hydraulic system, the key elements of which are of recognized brand imported abroad which ensure the high performance of the grab. It is simple in structure, easy to operation, and stable in working under severe circumstances.