Nothing
but you
What is perfection?
Knowing your field inside out, down to the smallest detail? Of course. Years of experience? That too.
But above all: the aim of always delivering 100%.
Your benefits: ETU + U
When the highest safety standards and the most rigorous testing are a given.
When heat and cold clash and the only answer is durability.
That’s when you choose U-tubes from ETU.
Upholding longevity
Ensuring performance
Conserving resources
Is certification required?
U-tube with a 180° bend
- comply with EU, ASME and many other standards
- bent according to individual bending plans/bending schedules
- made from seamless or welded tubes
- special designs available in a wide range of materials, e.g. carbon steels, stainless steels and special alloys
The roundness of the tube? Preserved as much as possible.
The wall thickness? Remains as unaffected as possible.
Your heat exchanger? Will have a noticeably longer service life.
Note: If required, we can also bend finned U-tubes. Please feel free to ask about your specific requirements and we will check what is possible for you.
U-tube with 2 x 90° bends
- comply with EU, ASME and many other standards
- bent according to individual bending plans/bending schedules
- made from seamless or welded tubes
- available with varying intermediate lengths and in special designs, depending on customer requirements
The angles? Two precise 90° angles.
The heat transfer surface? Fully maximised.
Your heat exchanger? Expertly tailored.
Finned U-tube
Welded seams are weak points. That is why we do not simply weld finned tubing and bent tubing together. Instead, we bend the tubing while it is already finned.
- available only as a special solution (this should be enquired about and agreed upon before the design stage. High-finned tubes are technically only possible if certain parameters are met)
- bent according to an individual bending plan/bending specification
- generally not finned in the bent section
- machined entirely to the customer’s specifications
The quality? Checked using proven methods. The thermal conductivity? Increased by 40%. Your heat exchanger? Maximum efficiency.
Testing U: Our Services
When it comes to quality, we never cut corners. That is why we also offer a range of tests for tubes and tube bends.
- Technological / mechanical-technological tests
- Hardness measurements
- Microstructural analyses
- Corrosion tests
- Residue analyses
- Specialised tests, e.g. investigations into residual stresses in tube bends, etc.
The best results come from teamwork. That is why we also work with external partners for further tests. For example:
- Eddy current testing on U-tubes
- Internal probe inspection
- Magnetic particle testing on ferritic (magnetisable) materials
- Annealing of components with extreme dimensions
Our tubes
Our bent components travel far and wide. Anyone buying a heat exchanger is usually unaware of the quality that lies in the details of its individual parts.
Yet our U-tubes are not simply a piece of metal in a heat exchanger. Ultimately, they form part of a much larger whole. An integral part of the safety of many employees and the efficiency of entire industrial sectors.
Often, for example, in these sectors:
Power generation industry
Chemical industry
Pharmaceutical industry
Food industry
Oil and gas industry
Industrial heating technology
