... the laboratoryFeatures1,Explosion proof axial flow fan is made up of explosion proof motor , fan blades ,wind cylinder etc.2,Fan blades with large chord ... or wind rate).8,Suitable for both steel pipe wiring and cable wiring. Technical parameters1,Explosion protection :ExdIIBT42,Rated voltage:AC 220 ... :G3/4"4,Cable's outer diameter:Φ9mm~Φ14mm5,Compliance with: GB 3836.1,GB 3836.2,IEC60079-0,IEC60079-1