Our company
Zwahlen & Mayr is active in two main sectors:
- production of welded, redrawn and seamless stainless-steel tubes
- steel constructions.
Situated in the heart of Europe, we are ready to meet the innovative challenges of the market.
145,000
M2 OF INDUSTRIAL AREAS
5,000
TONS OF WELDED TUBES PER YEAR
30,000
M2 OF INDUSTRIAL BUILDINGS
160
EMPLOYEES
145,000
M2 OF INDUSTRIAL AREAS
5,000
TONS OF WELDED TUBES PER YEAR
30,000
M2 OF INDUSTRIAL BUILDINGS
160
EMPLOYEES
Tubes
Since 1979, Zwahlen & Mayr has been a leading producer of welded stainless steel under the brand ZM TUBES.
Nowadays, ZM manufactures three types of stainless-steel tubes:
for high precision applications.
Welded tubes
Strong corrosion resistance, precise forming, and excellent roughness of surface even along the welding area are the keys to success that make ZM TUBES a world-class supplier for heat exchangers, evaporators, condensers and feedwater heaters.

Welded tubes
Strong corrosion resistance, precise forming, and excellent roughness of surface even along the welding area are the keys to success that make ZM TUBES a world-class supplier for heat exchangers, evaporators, condensers and feedwater heaters.
Redrawn tubes
Thanks to 40 years of “Swiss made” experience, using highly skilled staff and continually investing in technological and solution improvements, we have managed to maintain our position at the highest level of redrawn precision technology

Redrawn tubes
Thanks to 40 years of “Swiss made” experience, using highly skilled staff and continually investing in technological and solution improvements, we have managed to maintain our position at the highest level of redrawn precision technology
Seamless tubes
We are developing an entire division dedicated to the seamless tubes: a new plant to produce seamless stainless-steel tubes was installed at ZM in 2021, to meet the needs of all industries where welded pipes represent a risk to be avoided.

Seamless tubes
We are developing an entire division dedicated to the seamless tubes: a new plant to produce seamless stainless-steel tubes was installed at ZM in 2021, to meet the needs of all industries where welded pipes represent a risk to be avoided.
Steel constructions
The construction of buildings and other works, such as stadiums and bridges, requires a specific combination of skills, which goes beyond those required by production.
Zwahlen & Mayr has invested in building a team of experienced professionals and in the infrastructure and technologies to support them and ensure the effective management of complex construction projects.