Close this search box.

RB 300 series for Cooling Water Systems

OVERVIEW:    The cooling water system’s tube sheets, internals and sealing faces were suffering severe pitting corrosion due to a galvanic reaction between dissimilar metals. The  Chem-tect™ RB 300 series was used to protect against sea water at temoeratures of up to 80°C.



Ambient sea water inlet side and 60-80°C outlet side


Mild Steel water boxes & bronze tube sheets


The cooling water system was severely corroded and required refurbishment. The tube sheets were corroded due to a galvanic reaction between dissimilar metals. A 72 hour shut down period was utilised to complete the work. The tube internals required protection from abrasive blasting damage. Sealing faces were suffering severe pitting corrosion also.


Tube internals were protected by inserting rubber bungs from internal damage the surface treatment process.

The entire face was abrasive blasted to ensure surface is clean and free of contamination. RB 300 was applied to tube-sheet face, followed by post machine sealing faces to ensure division plates mate, preventing interference and by-passing. Caps were removed.  Chemcote also supplied nylon inserts to prevent tube end corrosion & cavitation.


This client has become one of our regular customers. Chemcote has conducted numerous jobs for this client over the years, including multiple heat exchanger and condenser units. During a routine 4 year inspection, other cooling water systems coated with the same coating which showed no signs of deterioration.


Base Plate Corrosion Prevention

Repairs required Application of Primer Coating applied to affected areas After application of Topcoat Previous Next OVERVIEW:    A 40 year old excess gas bleeder structure

Read More »

Industrial Fallout Protection

After whip abrasive blasting Application of Epo-chem system to internals Basalt Fibre application on internals OVERVIEW:    A steel production plant contracted Chemcote to reinforce

Read More »
Contact Our Specialist Coating Advisors