... international standard sand pump 5,high chrome 1, double wall dredge pump main parameter a) Caliber: DN200-DN1000mmb) Flow: ... good wear-resistan, super dredging performance, perfectly suited for the dredge on the whole construction, high multiple economy benefits, etc.. ... It throughout meets requirements of the dredge to dredging pumps. 3,features a) Advanced hydraulic model, ...