... , Light weight, Corrosion Resistant Name: Polyethylene tubeSpecification:1,Material: high quality HDPE100 or PE802,Colors: black OR others on request 3 ... sewage treatment 4,gas supplyAdvantages:1,Non-toxic: no heavy metal additives, would not be covered with dirt or contaminated ... can reduce installation costs by as much as 50% over metal piping system 4,Higher Flow Capacity: smooth interior walls ...