Tanks and pressure vessels made of stainless steel are often subjected to varying loads. Changing temperatures and mechanical and chemical influences lead to corrosion, cracking, leaking seams or mechanical damage over time.It may also be that over time a tank or vessel is rebuilt or modified with additional inlets and outlets, a different mixer, retrofitting for heating or cooling media, new gauges and so forth.The consequence of that is that tanks and pressure vessels have an expiration date.

We own all the necessary certificates and have specialised on the efficient repair and reconstruction of tanks and vessels.

Pressure pressure vessels and piping - certificat H (as a substitute for H1 und A1)

For major reconstruction work, we have a well-equipped workshop at our disposal.
We operate mobile and flexibly on-site.

Further information can be found in our brochure:


PT - dye penetrant testing


repairs of vessels and tanks

damage localization


repairs of vessels and tanks

after repair has been completed


repairs of vessels and tanks

For the localisation of tears in containers, silos and pipeline systems, use PT dry penetrant testing. We possess the certification required in accordance with
EN ISO 9712 to carry out PT tests.We use the two methods described in the following:

Dye penetrant test - by daylight > 500 luces

For the dye penetrant test, the surface of the component to be tested must be cleaned of grease and oil residues before the penetrant is applied.

Application may be done with a brush, through immersion in a bath or, at well-ventilated locations, by spraying on. The penetrant has an excellent ability to flow; it utilises the capillary action of the finest material separations and has a marked colour contrast with the subsequently used developer.

After the exposure time dependent on the material to be tested has expired, the surface is cleaned with water and dried. Then the developer is applied.

The developer is a fine powder which penetrates the cavities of the test piece through capillary action and extracts residual penetrant.

Generally, the penetrant is a red dye solution and the developer is white. The colour contrast makes it possible to locate damaged areas and to determine tear contours.

Fluorescent penetrant test - in the dark < 20 luces

When ambient light is low, fluorescent penetrant which is made visible with the help of UV radiation can be used. This test is much more sensitive than the dye penetrant test because the fluorescent particles create a luminance contrast by transforming the UVA radiation into visible light.