Gpi builds on site demiwater storage tank for Dow Chemicals

Gpi has build a 3995m3 demineralised water tank on site for Dow Chemicals in Terneuzen according to API 650 guidelines.

The flat bottom tank is a storage tank for the storage of demineralised water for our customer in the chemical sector.

The project includes a tank with a capacity of 3995m³, a dimension of 19 meters and a total height of approx. 18 meters. The total weight of the tank is 82,000 kg. This tank was produced on site at our customer’s location in Terneuzen using our site construction machine.

Our unique Coilbuilding machine works with the help of an innovative jack system. The tank is manufactured from the high quality Duplex 2205 material with a 3.2 material certification. This means that the material has been inspected by both the manufacturer and an independent third party and is therefore provided with independent verification of the material conformity.

In addition, the tank was equipped with a self-supporting domed roof in accordance with the API 650 directive. The convex shape of the roof provides a sturdy construction so that no reinforcing ribs need to be used.

Enployee safety and minimizing environment hazard is our number one priority while working at Gpi.  Especially when manufacturing a tank in the middle of an active site, this can be challenging. Dow Chemicals sets strict standards with working in enclosed spaces and ‘hot work’ on site. This project proves Gpi can seamlessly meet even the most stringent safety requirements at our clients site. We look forward to a further fruitful cooperation.

For more information about Dow Chemicals, please visit

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