... HDPE river dredging pipe 2.Sand&gravel dredging 3.Long life using 4.Wear resistance 5.Good self-lubrica HDPE river dredging pipe ... details: Specifications1. HDPE Pipeline for dredging. 2. DN: 90mm-1200mm. ... 1.6MPa). 4. Color: white, black, or upon request.Feature:HDPE pipe for water supply or sand dredging.1.Long lifespan, more ...