Dredging Pipeline-Polyethylene Pipe Introduction to dredging pipelines: 1. High wear resistance. Among all engineering plastics, UHMV-PE has the best wear resistance.The higher the molecular weight, the better the wear resistance. The wear resistance of the ultra-high molecular weight polyethylene pipe produced by our company is 7 times higher than that of Q235 steel and 2.7 times higher than that of manganese 13 steel