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Corroded Flange Grooves Reformed With Belzona


Отрасли промышленности:

Power (POWR)



Valves, Pipes and Fittings (VPF)


Местоположение клиента:

Hydropower plant, Switzerland


Дата применения:

February 2012


Ситуация применения:

Flange grooves in four pipe flanges. Each flange had a diameter of 1820mm; the grooves were 16mm wide and 3-4mm deep.



Corrosion leading to incorrect sealing of mating surfaces



Belzona 1111 (Super Metal)

Belzona 1321 (Ceramic S-Metal)





Метод применения:

Application was carried out in accordance with Belzona System Leaflet VPF-1. After grit blasting the groove, Belzona 1111 was packed overthick into the groove and, using a simple pre-cut template, the original profile of the groove was recreated. Finally, a thin layer of Belzona 1321 was applied to create a smoother surface.


Факты Belzona (Экономия средств? Альтернативы? Почему Belzona?, и т.д.):

Welding would have taken three to four weeks for two people to complete, a considerable delay in the refurbishment of this hydropower plant. The simple and cold-applied Belzona solution was carried out in just six working days by three people and now ensures long-term corrosion protection of the liner grooves.


Описание фотографий

  1. General view of the equipment before application 
  2.  A pre-cut template allows for simple, effective defining 
  3. Belzona 1321 applied for a smoother surface 
  4. Pressure pipe after re-assembly
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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