... , oil, cement, mud suction/ discharge/ dredging HDPE Pipe for dredger is most suitable for mud & sand delivery and discharge, the performance ... and it can be used for 5-8 years upon sand content.4. HDPE Pipe is assembled with two metal ... water for using, total engineering cost is low, high efficiency, safer, and more convenient.HDPE pipe types: SDR33, SDR26, SDR21, SDR17, SDR13.6, SDR11 HDPE pipe for ...