... .Low noise compact form Industrial Centrifugal Fan Axial fan, Axial Flow Fan, Fan, Ventilator, Ventilation, Ventilating Fan, Ventilation, Ventilator Fan, Ventilation, Air Mover ... engineering Electric Current Type: AC Mounting: Free Standing Blade Material: steel plate Q235 Air Volume: 600-370 ... An operator receives light and sound signals.· Mine fan unit in accordance with the safety rules consists ...