Anti-freeze tube used for transporting liquid

摘要

The invention relates to an antifreezing tube for the transportation of liquids, including in the most inside a corrosion-resistant layer (1), in the most outside a insulating protective layer (3) and a heating layer (2) between the corrosion resistant layer (1) and the insulation layer (3). According to the invention, a positive lead wire (4) and a negative lead wire (5) are arranged between the electric heating layer (2) and the insulation layer (3) or within the electric heating layer (2). The positive lead wire (4) and the negative lead wire (5) extend along the length of the antifreezing tube. Electrical current which flows through the positive lead wire (4), the electric heating layer (2) and the negative lead wire (5) effects - due to the electrical resistance of the electric heating layer (2) - a heating of the antifreezing tube.