Abstract: The invention relates to a heatable tube (1) for conducting fluid, gaseous and/or pasty media, comprising an outer wall (10) that encloses an inner volume (11), and a heating element (2) which is arranged inside the inner volume (11) and which includes at least one first heating conductor (20a) that is surrounded by a first heating conductor insulation (21) insulating the heating conductor from the inner volume (11). The invention is characterized in that the first heating conductor insulation (21) insulating the heating conductor from the inner volume (11) is surrounded by a second heating conductor insulation (22).

Abstract: The invention relates to a heatable tube (1) for conducting fluid, gaseous and/or pasty media, comprising an outer wall (10) that encloses an inner volume (11), and a heating element (2) which is arranged inside the inner volume (11) and which includes a first heating conductor (20a) and a second heating conductor (20b). The heatable tube (1) is characterized in that the first heating conductor (20a) and the second heating conductor (20b) are connected to one another by a heating conductor connector (20c) so as to form a loop in such a way that one heating conductor (20a, 20b) acts as a feed conductor (20a, 20b) and the other heating conductor (20a, 20b) acts as a return conductor (20a, 20b).

Abstract: A system for connecting hose lines, including a plug-in connector (2) and an electric heating element (36), wherein the plug-in connector (2) has at least one first (4) and one second connection (6) which are connected to one another by a tube (8), and wherein at least one section of the tube (8) can be heated by the electric heating element (36). The electric heating element (36) is embedded into a clamping ring (10) having a gap (12). The tube (8) is pushed through the gap (12) of the clamping ring (10) in such a way that the clamping ring (10) reaches around at least one section of the tube (8) and bears against the tube (8).

Abstract: A system for connecting hose lines, including a plug-in connector (2) and an electric heating element (36), wherein the plug-in connector (2) has at least one first (4) and one second connection (6) which are connected to one another by a tube (8), and wherein at least one section of the tube (8) can be heated by the electric heating element (36). The electric heating element (36) is embedded into a clamping ring (10) having a gap (12). The tube (8) is pushed through the gap (12) of the clamping ring (10) in such a way that the clamping ring (10) reaches around at least one section of the tube (8) and bears against the tube (8).