Pressure vessels & cisterns
Örnalp Unozon designs, constructs and produces pressure vessels for many different purposes, including reactors, columns, evaporators, vacuum vessels, cyclones and bleaching towers.
Efficient manufacturing
Many of the materials we work with are expensive and complicated to process. Products are therefore designed in a way that minimizes material consumption. The manufacturing process is highly efficient, keeping costs down for our customers. Our manufacturing unit produces pressure vessels in titanium, aluminum, acid-resistant steel, carbon steel, hastelloy, SMO254, duplex and super duplex and masters the pressure vessel standards:
- EN 13445, EN 13480
- AD-2000
- ASME VIII



Please contact us if you want to know more!

We specialize in titanium welding.
Titanium welding! Most of the time we work with homogeneous material, which is often both the best and most economically advantageous. Sometimes, however, other solutions are required, such as explosive bonding or loose lining, where a vessel is lined with a thin sheet of titanium. Titanium is difficult to weld and requires special skills and protected environments as the material changes if it comes into contact with oxygen during welding.
We weld according to standard EN ISO 3834-2 and all Örnalp Unozon welders are licensed to ensure a high and consistent quality of work.