... , mud suction/ discharge/ dredging HDPE Pipe for dredger is most suitable for mud & sand delivery and discharge, the ... resistance is strong, can soak in sea water for 50 years with no change, Anti-uv, anti ... pipe and pipe are connected by flanges of bolt., Steel pipe lining, can ensure pipe will not ... Sand Delivery Pipe is either on land or water for using, total engineering cost is low, high efficiency, ...