Related parts like discharging sand pipe, floaters and rubber hose for sand pump dredger, dredger ship, submersible dredge, suction dredger, cutter dredger, mechanical cutter suction dredger, hydraulic cutter suction dredger and other dredging equipment are the constituent parts of a pumping system. All of them are made in suitable materials due to different purposes, and widely used for sucking or discharging of water, sand and powders in industry, agriculture, factory, mining and building etc. They have the characteristics of corrosion resistance, wear resistance, excellent flexibility, long life span and easy installation.