1,10 years producer river gravel Pump 2,high chrome wet ... 75 m 5,ISO,CE pass 1, centrifugal horizontal river gravel pumpa) Caliber: DN200-DN1000mmb) Flow:600-25000m3 ... wear-resistan, super dredging performance, perfectly suited for the dredge on the whole construction, high multiple economy benefits, etc.. It ... 3 or 5 pieces of vane. At the same time, the impellers can be provided with various diameters ...