... and discharge, the performance is as follows:1. HDPE Sand Delivery Pipe of weight is light, only one-eighth of steel ... and disassembly, ensure transportation engineering of high efficiency.5. HDPE Sand Delivery Pipe has smooth outer and inner wall, friction coefficient is ... engineering cost is low, high efficiency, safer, and more convenient.HDPE pipe types: SDR33, SDR26, SDR21, SDR17, SDR13.6, SDR11 ...