It's usually made from cast PVC or Polypropylene. The majority of these units are made with steel reinforcement encased within the plastic shell. The unit above was made for a metal finishing (electroplating) plant although are suitable for various chemical process plants.
Available from 200 to 2000 litres and beyond, very rugged and guaranteed to withstand many years of trouble free operation.
If you have an existing unit that needs replacing, we also make tank liners, for a low cost alternative.