... (DT) Blowers abd Fans 1.Dynamic balancing tested Impellers 2.High efficiency,Easy installation 3.ISO9001:20 HTFCf(DT) ... steam boiler,waste heat recovery boiler,,,,and various boilers. 2.Structure Centrifugal fan mainly consist of impeller,case,air inlet ... 45°,90°,135°,180°,225°4. Product Characteristics-Optional Parts: flexible coupling, variable inlet vane damper, damper, electric actuator, motor with ...