Metal sheets are made of high quality galvanized steel (S350 – Z350), punch-holed in factory and assembled on site by bolting.
All elements and bolting are hot-dipped galvanized.
The water-tightness of our tank is given by a tailor-made reinforced PVC geomembrane. This membrane is protected by a geotextile felt, fold-proof and piercing-proof, tailor-made as well.