Beijing Rubble Technology Co., Ltd.

This is the flange of duct for ventilation fans. with material of Q345 or Q235... Technology of production: welding and machining

The impeller blade angle is adjustable from 15-40 degree, adjusting blade angle. Ventilation Fan can be available as fixed and adjustable pitch fans.

The impeller blade angle is adjustable from 15-40 degree, adjusting blade angle. Ventilation Fan can be available as fixed and adjustable pitch fans.

Impeller cover of the ventilation impeller, duct material: carbon steel Q235/345 OR according customer requirement. size: according to customer's

This hub is the base of impellers. The blade is fixed on this hub to constitute the impeller. Material: Aluminum Alloy, carbon steel, ductil iron cas