H-shaped unipolar curved-arc trolley line is to bend H-shaped aluminum or copper profiles and their ABS insulating sheaths into the bends required for equipment movement, so that the equipment can turn or run in arcs. This product has extremely high technological requirements, and it is necessary to accurately measure the turning radius on the spot, otherwise it will cause the collector to swing too much, the power transmission will be unstable, the equipment will not move continuously, and even the collector will be damaged and deformed. The curved sliding contact line can be combined into a multi-wire system (three-phase system to 10-wire system) according to the site, and the ring line in the workshop mostly adopts a multi-wire combination.