Engineering & Production

From design to realization of your tank

Our engineers distinguish themselves by their great knowledge of the specific requirements per industry. They put this expertise into practice in designing and calculating storage tanks, pressure tanks and other parts of production facilities for customers in the pharmaceutical, chemical and food industries.

Check out our business video below.

Tank design

Designing a tank is a process on which we collaborate with the client to the greatest extent possible. It is co-makership under management of an experienced project engineer. The product and your process desires always form the starting point. We subsequently test the design for, among other things, hygiene and cleanability (EHEDG), laws and regulations, standards, practical applicability, future-orientation, and economic feasibility. A project is only ready for engineering once you have approved the drawings, and once the entire design has been internally tested by the quality inspector. Since 2005, our modelling has been carried out in 3D, whereby we can if so desired deliver the 3D files for your own engineering packages.

Certification, standards and regulations

A licensing procedure can be a complicated matter. In order to avoid unnecessary costs, it is important to carry out a good inventory of the standards etc. the installation (and tank) needs to comply with. Here, the regulatory bodies can reference various norms and standards during licensing, such as PGS 29, PGS 30, PGS 31, EN 14015 and EN 13445. Naturally, Gpi is knowledgable in the application of these regulations. We can professionally advise you on the acquisition of the correct licences, and can furthermore support you during the talks with governmental institutions.


Gpi produces all manner of stainless steel tank types and sizes for all sorts of manufacturers in the pharmaceutical, chemical, food-processing and general storage industries. Each of Gpi’s own production locations is geared towards specific products in terms of its staff, technology and machinery (including laser cutting equipment, automated plasma and orbital welding equipment). From small high-quality pharmaceutical process kettles to high-pressure reactors and storage tanks with a maximum diameter of approximately 12 metres. Larger storage vessels – of up to 25 metres in diameter and a capacity of 7,000 m³ – are realised by our own teams on your location. Furthermore, we do not process any carbon steel. This is a conscious choice as part of our quality principles.

Do you have any questions about our Engineering?

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Production locations

On the Handelsweg in Lopik, we build smaller process tanks, measuring up to 20 m3, in four separate halls. These tanks are meant for the food, pharmaceutical and chemical industries. All of the employees have their own workplaces, equipped with, for example, precise grinding devices and orbital welding equipment, for optimum results.

We realise tanks from 20 m3 up to approximately 500 m3 at our location on the Bedrijfsweg. Sophisticated logistics and modern welding equipment ensure fast and high-quality production.

In Groot-Ammers, on the banks of the river Lek, we are able to build tanks with a diameter of approximately 25 metres and up to a height of 30 metres. These can be loaded onto a ship and transported to the client.

At our location that belongs 100% to us in Brzeg, Poland, we manufacture tanks, stairs, platforms and construction works in serial production

Would you like to see what we have in-house for yourself? We would be delighted to welcome you at one of our production locations. Contact us to make an appointment.

Gpi Coil Building: Building tanks on-location

Gpi is able to construct storage tanks measuring up to 25 metres in diameter and 30 metres in height (with a capacity of up to 15,000 m³) within its own locations or directly on the client’s location. Here, we make use of the incredibly efficient Coil Building systems, which ensure fantastic quality.

Read more about what we offer in terms of building on-location here, or view our film above.

VCA installation**

In addition to engineering and production, we also assemble and install the kettles, tanks and related equipment we provide. The experienced, qualified and motivated professionals within our installation department are able to carry out any project efficiently within the set schedule. They work according to strict Gpi-procedures and instructions, which are regularly audited by Lloyds.

Gpi is also VCA** certified. No assignment is not special enough for us. Whether placing and anchoring a tank with a diameter of six metres and a length of twenty metres, placing an orbitally-welded pipe system or building a tank under difficult conditions … good consultation with the client and thorough preparations ensure successful completion.

“With an enthusiastic team, we realise ambitious projects and always strive for 100% satisfied clients.”

Arno Rodenburg – COO


Curious about our different disciplines?

We are pleased to inform you