Color: Black or customized, such as white, orange, etc. Material: virgin PE 100 Sizes Range: outer diameter from 110mm to 850mm with optional working pressures. Dredging HDPE pipes have exceptional properties such as corrosion resistance and light weight that makes them the best choice for dredging contractores. Dredging HDPE pipes are made from high wear resistant virgin PE100, mixed with anti-UV material and carbon black by extrusion molding technology.