New type flameproof explosion-proof shaft type fans comprise flameproof explosion-proof motors, aluminum blades, guards, and cylinders welded with steel plates. The surface of the enclosures is sprayed epoxy resin powder. So they can satisfy the requirements of anti-corrosion in chemical, petrochemical and sea industries. Explosion-proof wall type exhaust fans have 4 installation types: bracket type, fixed type, pipe type and wall type. Explosion-proof shaft type fans are used for exhausting in the room, ventilation, in the circuits of AC 50Hz, 220/380V. They are also mounted in series in the long exhaust pipes to prove the pressure in the pipes. The blades diameters of this series fans have 13 specifications, each specification has 4 blades, the angle of which are 15o, 20o, 25o, 30o, 35o, normally 30o.