1. for the dangerous sites with explosive air mixture: 1 division、2 division; 2. flammable gas, steam class:ⅱa、ⅱb4; 3. temperatures classification:t1~t4.
1. axial flow fan is made up of explosion-insulating typefan, vane, fan tube and protective net; 2. the shell of motor is made of ht250 the vane is made of casting al-alloy; 3. apply to ventilate and discharge air in 50hz 220v/380v production place; 4. steelpipe and cable wiring.