Rail and Transit

Electric trace heating project for Hohhot Metro Line 2 Phase I. Full-line water pipeline freeze protection with DN20‑DN50 pipe size, maintained temperature 5℃. Adopts Huanrui TXLP/2R heating cables with total length of 8,000 meters, ensuring stable operation of metro water pipelines in cold northern regions.

Electric trace heating project for combined garage of Jinan Metro Line R2 in Shandong. DN65 water pipelines with maintained temperature of 5℃ for freeze protection. Huanrui DBR self-regulating heating cables are used, total heating cable length 800 meters, 13 circuits, total power 9.6 KW.

Electric trace heating project for Putian Depot of Zhengzhou Rail Transit Line 8 Phase I in Henan. It serves fire pipelines in multiple workshops and substations with DN25–DN100 water pipes and maintained temperature of 5℃. Huanrui TXLP/2 heating cables are adopted, total heating cable length 16,019 meters, 110 circuits, total power 260 KW for freeze protection of rail transit fire pipe network.

Electric trace heating project for CRH380B cold-resistant EMU, 350 km/h Fuxing intelligent EMU and CR450 high-speed intelligent EMU of CRRC Group. Heat tracing covers on-board chilled water systems, vacuum toilet systems and electric heating drainage guide sleeves. Huanrui LSR heating cables with total length of 50,000 meters are used. The solution addresses freezing, brittle cracking and performance degradation under wide temperature variation for high-speed trains.