SDF tunnel ventilation fan
Technical Features
- ● SDF(A): Fast outlet speed, large air volume, energy-saving and easy to maintain; for small-section projects like subways.
● SDF(B): Large-section tunnel axial fan, high efficiency, low noise & large air volume; adjustable blade angle for altitude adaptation.
● SDF(C): Pole-changing multi-speed fan with adjustable blades; energy-saving, suitable for plateau construction ventilation.
● SDF(D): Patented 4-stage counter-rotating fan for long tunnels; long air delivery, high pressure & efficiency, supports multi-stage operation, plateau-adaptable.
● SDF(E): Urban low-noise subway fan; multi-speed motor with dual/extended mufflers, meets strict noise requirements for metro construction.
● SDF(P): Variable frequency energy-saving tunnel fan, saves over 30% power; adjustable airflow & motor quantity for all tunnel constructions.