▎ 摘　　要

NOVELTY - The cable has a heating wire core (1) whose outer side is tightly covered with an inner sheath (2), where the heating wire core is made of tinned copper material. An outer side of the inner sheath is provided with a winding layer (4). An outer side of the winding layer is uniformly wound and fixed with an electric heating wire (5). An outer side of the electric heating wire is provided with a weaving layer (6), where the weaving layer is made of tinned soft copper material. An outer side of the weaving layer is provided with an outer sheath (7). The inner sheath and the outer sheath are made of silicone rubber, where an uniform heat conduction layer is graphene coating. USE - Parallel electric heating cable for a fire-fighting pipeline used in long-distance medium transportation. ADVANTAGE - The cable ensures that the outer side of the winding layer to be wound with the electric heating wire so as to improve heat tracing uniformity of the parallel electric heating cable at same time, and realizes setting of the inner sheath and the outer sheath of the silicon rubber material, thus improving fire-resistant performance of the cable to satisfy utilization requirement of people. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a parallel electric heating cable for fire-fighting pipelines used in long-distance medium transportation. Heating wire core (1) Inner sheath (2) Winding layer (4) Electric heating wire (5) Weaving layer (6)