FRP fan impeller: from 12 miter type blade airfoil backward welding arc cone in the middle of the plate-shaped front and rear disc tray. As a result of the wing-shaped leaves, ensuring fans of high efficiency, low noise, high strength. Impeller static and dynamic balance correction, it is smooth. The same number of aircraft through the same draft fan impeller. FRP fan housing: housing is welded steel with ordinary snail shape. Single suction fan casing made of three different forms: №8 ~ 12 cabinet made the overall structure, can not be disassembled. №14 ~ 16 made two open chassis. №18 ~ 28 chassis made three open. On the induced draft fan, snail-shaped plate made thicker to prevent wear appropriate. Model: F4-72 4-72 airflow direction: centrifugal fan Material: FRP fan Fan pressure: pressure fan Type: Exhaust Fan Performance: corrosion fan Contact: Contact: Zhengjing 15206902165 15110078216 QQ: 402249092 Tel: 010-88231581 Fax : 010-88231581 E-mail: 1345053413@qq.cm Address: Wu Cheng Lu right Tunzhen Zone Website: http: //www.dzrbtf.com/