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.