... ,boiler,and forced ventilation 3.ISO&CE industrial suction blower fan Cell: + 86 18790510806Company profile:XinXiang blower factory CO., ... The main products are :anti-corrosion fan.special for metallurgy fan.special for annealing furnance fan.impeller:blade. brick kiln dedicated fanWe ... into10 specifications according to the impeller angle, each type of blades can be mounted by 15°, 20°, 25°, 30°, 35 ...