Production methods

Culobel Pressurised disposes over all the required engineering know-how for developing new pressure vessels according to the European regulations (PED) that are in force. State-of-the-art welding technology is utilized by our EWE welding engineers in this regard. The in-line production of reservoirs is carried out with highly automated equipment, which is not only more efficient and flexible than batch processing, but also reduces the risk of damages during handling. The transport between the various production phases is carried out by means of transport belts and conveyors.

The components that are used for building our reservoirs are all produced in-house. Heavy deep-drawing has always been our specialty. With hydraulic presses of up to 800 tons, the component parts are formed from flat steel plates of up to a maximum thickness of 10 mm. Transfer presses and progressive dies are used for larger series.
After thorough cleaning and degreasing, the component parts are welded to one another by welding robots, which can service four different production stations at the same time. In this phase, those tanks that have passed our quality checks will be provided with connections, such as copper tubes that are shortened, flared and bent by us, and which are subsequently attached by induction brazing to the tanks.
Testing bench
The assembled tanks are thoroughly tested on a test bench, which was developed by us. The tanks are tested with up to 60 bar of dry Pressurised air on these fully automatic test benches, whereby all of the parameters are carefully checked. This system gives a maximum guarantee for excellent mechanical resistance and a leak-free construction, making it easy for operators to evaluate their safety. The tanks are purged with nitrogen when the pressure is released, which maximizes rust-resistance.
Our production shop also disposes over a spray-painting line, for painting or powder-coating the reservoirs.