Case Study: Corroglass 600 for fan unit – CC022

Corrosion protection for fan unit.


General industry

Application Date


Scope Of Work

Protection of new impeller and casing, designed for use
in aggressive conditions.


Internals: Corroglass 600 Series.
Externals: Plasmet ZF.


Carbon steel.

Coating system

• Internal: The impeller was grit blasted to ISO 8501-1,
SA 21/2 and treated using Corroglass 600 Seriesmaterials.
• The casing was grit blasted internally to the same
standard, followed by application of Corroglass 600
Series to a minimum dry film thickness of 1mm,
carried into the flange rebates and finished flat to
ensure optimum performance in use
• External: The area was grit blasted to SA 2 and
protected using two coats of Plasmet ZF.

Coating credentials

This particular unit was developed for use at a duty
incorporating 1% hydrochloric acid, 500ppm
monochlorobenzene and moist air at 30ºC, operating
at a maximum of 1339rpm and requiring additional
protection against corrosion attack.
Using Corrocoat’s engineering facilities the impeller was
fully balanced to BS6861-pt1.


Left: Impeller in coating shop after grit blasting and
primer coat.
Middle: The fully completed and inspected impellers.
Right: Casing completed, awaiting dispatch.