... flexible plastic tube advantages: Strong suitability, Health & non-toxic, Light weight, Corrosion Resistant Name: Polyethylene tubeSpecification:1,Material: high quality HDPE100 or ... treatment 4,gas supplyAdvantages:1,Non-toxic: no heavy metal additives, would not be covered with dirt or ... reduce installation costs by as much as 50% over metal piping system 4,Higher Flow Capacity: smooth interior ...