... . the dielectric strength of 33MV / M HOT SALE HEAT SHRINKABLE WRAPAROUND TAPE Introduction:We adopt HDPE outer protecting tube, ... directly buried insulation pipe;2.CJ/T155-2001——high density polyethylene pipe and prefabricated directly buried insulation ... Advantages1. Waterproof, moisture proof, prevent leakage, anti-permeability2. High strength and good anticorrosive ability, not easy to damage3. ...