Thermal insulation tube made of foamed polyethylene is used for the insulation of hot and cold water pipelines, central heating or sanitary distribution. The tubes can also be used as protection for painted tube profiles, or profiles with a noble surface. Excellent mechanical, sound and thermal insulation. The material is flexible and easily shaped, it can be easily divided and adjusted to the required size. The advantages include chemical resistance, non-absorption, environmental friendliness and the possibility of easy recycling.