Case Study

Case Study – Treatment for HSC Pump Casing


Petroleum Company, UK.


The Challenge

Internal corrosion protection of pump.

Surface preparation, supply and application of the Corroglass 600 series coating systems, to protect the internal wetted areas of a split pump casing, which could be subject to a service condition of sea-water.


May, 2022.



Corroglass 600 Series.

Plasmet ZF.



  •  Rebated split face and suction/discharge flanges.
  • Abrasive blasted internally with new abrasive in accordance with ISO8501-1  Sa 2 1/2 surface finish, to achieve a minimum surface profile of 50 microns.
  • Completed a final blow down, sweep and vacuum cleaned thoroughly where required to remove dust.
  • Applied Corroglass 600 series to achieve  the minimum DFT of 1250 microns.
  • Casted in the stationary wear ring landings using the customer supplied rotating assembly.
  • Carried out thickness testing and spark testing at 17 kV following adequate cure.
  • Removed surface protection, dress edges and completed 100% visual inspection.
  • Abrasive blasted externally with new abrasive in accordance with ISO 8501 -1 to Sa2 surface finish.
  • Applied one coat of Plasmet ZF.
  • Packed and prepared for dispatch.


Coating Credentials

Corrocoat 600 series:  A two pack cold cured vinyl ester glass flake. Excellent in immersed environments. Excellent resistance to solvents, acids and de-mineralised water. Excellent flexibility, undercutting resistance and sliding abrasion resistance.

Plasmet ZF:  A surface tolerant two-pack epoxy coating compound incorporating a rust inhibitor and passivator, with MIO (Micaceous Iron Oxide) and glass flake for increased protection.

Treatment for HSC Pump casing


Find out more about the pump repair and refurbishment services we offer here.

Click here to download the case study as a pdf