Heat exchanger brazing
Heat exchanger brazing and refurbishment.
Herdi GmbH specialises in heat exchanger brazing, joining copper to steel and to stainless steel. We repair, refurbish and modify. We focus on clean, strong joints that remain leak-tight, including on demanding components.
- Response within 24 hours
- Worldwide. A welder can be on site in Europe in 3 to 4 days
- Based in Herne, experience since 2006
Repair, refurbishment, modifications.
Whether a heat exchanger is leaking, needs modification or is to be adapted for a new task, we carry out precise, professional brazing work, including on demanding components and structures.
Our brazing services.
- Heat exchanger brazing
- Copper-to-steel joints
- Copper-to-stainless-steel joints
- Repairs and refurbishment
- Custom modifications and solutions
Frequently asked questions
Brief answers.
Can copper be joined to stainless steel?
Yes. In brazing, the filler metal melts while the base materials remain solid, so copper can be joined to steel or stainless steel. Herdi makes copper-to-steel and copper-to-stainless-steel joints, mainly on heat exchangers.
Do you repair leaking heat exchangers?
Yes. Heat exchanger repair and refurbishment are among our main brazing applications.
Do you modify heat exchangers too?
Yes, custom modifications and solutions are part of our services.
How quickly will I receive a response?
You will receive a non-binding response within 24 hours.
Key terms explained
- Brazing
- Brazing uses a filler metal that melts while the base materials remain solid. This also allows different metals to be joined, such as copper to steel.
- Heat exchanger
- Equipment that transfers heat from one medium to another, often using copper pipe coils or tube bundles.
Your contact: Musab Köksal, Herdi GmbH. Updated: 30 September 2026.
Enquiry
Tell us about the problem. Response within 24 hours.
Plant or component type, material, urgency. Attach a photo or drawing. You will receive a non-binding response within 24 hours.