The API 650 is the American standard for welded flat-bottomed vertical storage tanks. This standard dictates tank design, manufacture, welding, inspection and installation requirements. The API 650 is widely used for tanks designed to withstand low internal pressures, for the storage of typical products such as crude oil, petrol, chemicals and water. Gpi has extensive experience when it comes to API 650 tanks, varying from tanks built in the factory up to +/- 500m3, to tanks built on-location up to +/-15,000 m3.
Depending on the desired design and design conditions, these tanks are equipped with a conical roof or a doomed roof, with or without anchors and stiffening rings, such as wind girders and/or a top corner ring. Naturally, these tanks can be provided with a spiral staircase, a cage ladder or a stairway. In terms of material, a form of duplex is often chosen. Due to this material being stronger than normal austenitic stainless steel variants, thin walls can be employed, which ensure for a more rapid, higher quality and affordable tank.
Gpi produces API 650 tanks both in its various factories on the river bank and next to roads, and directly on-location by means of our Coil Building system. Read more about this system here, or watch our Coil Building film.
We also produce tanks according to NEN-EN 14015, the European equivalent of API 650. Read more about this here.
Gpi Tanks engineered and manufactured four stainless steel tanks for a major Circular Steam Project. With this project our customer invests in an innovative technology to convert water-based waste into energy.
Gpi has constructed an on-site tank for USG Geleen with a capacity of no less than 7300m3. The tank has been designed to EN 14015, the European norm for flat-bottomed tanks.
Gpi has build a 3995m3 demineralised watertank on site for Dow Chemicals in Terneuzen according to API650 guidelines.
Gpi has build a 3995m3 demiwatertank for its customer, Dow Chemicals, on site. The tank is designed and build according to API650 guidelines.
Gpi has supplied 2-site constructed tanks for a customer in the chemical sector. Both tanks are made of Duplex 2205.
The client requested three storage tanks that had to comply with the KIWA BRL-K756 directive. The three storage tanks have a capacity of 45,000 litres each, and are to be used for the storage of formic acid, lactic acid and Sal CURB. Sal CURB is a mixture of fluid formaldehyde and organic acids.
