Disc grab more suitable for a variety of harsh environments efficiently engaged in iron and steel scrap and waste material handling big materials, has been in the port, railway, metallurgy, mining, construction and other industries widely used, its structure is divided into four single rope, double rope, rope, electric four types.Jaw can close according to the shape and size of materials, respectively, to block material fetching, jaw plate number according to grab materials at the beginning, and users need to design four to eight disc.