Die hohe Korrosionsbeständigkeit und hervorra-genden mechanischen Eigenschaften von be währen sich beim Segmentlining in gleicher Weise wie seit Jahrzehnten i···

Prefabricated shafts are particularly cost-efficient when installed as sink shafts where the ground water level is high. The details of these sink shafts are ta···

The formation of sulphuric acid by thiobacillus in waste water systems cannot always be avoided by planning. Besides the direct introduction of waste water cont···