when corrosion strikes,
almost nothing escapes!
Corrosion affects most kind of metal surfaces
In solar water heating systems, it can affect the inside of the tank
Thise especially happens in areas which have hard water
Hard water has chloride content which can even corrode tanks of stainless steel material
 
The stages of corrosion
1 Stage   2 Stage   3 Stage  
   
1 Stage : Initial pit forms
2 Stage : Auto catalytic process speeds up as                 concentrated solution becomes more aggressive
3 Stage : Leak occurs as pit breaks through outer surfaces
What is glass lining ?
It is non-stck coating created by melting special glass material in an automatic furnance at a very high temperature (around 850°C).
‘Glass Lining’ is an internationally renowned technology in solar water heating systems to help provide clean hot water.