WHO WE ARE

Zwahlen & Mayr is active in two principle sectors: the production of welded stainless steel tubes and steel constructions. Since 1881, we have been known throughout the world for our high quality products, excellent customer service and being 100% Swiss Made.

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ZM TUBES PRODUCTION

Since 1979, Zwahlen & Mayr has been a leading producer of welded stainless steel and nickel alloy tubes under the brand ZM TUBES. These tubes are used in a wide range of applications as heat exchangers, condensers, evaporators, feedwater heaters for power plants and equipment in the food industry as well as in the pharmaceutical, pneumatic, automotive, instrumentation, oil & gas, valves and aerospace industries.

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.

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welded tubes

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.

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Welded Redrawn tubes

Our stainless steel welded tubes are fully manufactured “in house” from mother coil slitting up to standard welded tubes which guarantees constant mechanical parameters, specific surface roughness and tight dimensional tolerances.

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Welded Redrawn tubes

Welded Redrawn tubes

Our stainless steel welded tubes are fully manufactured “in house” from mother coil slitting up to standard welded tubes which guarantees constant mechanical parameters, specific surface roughness and tight dimensional tolerances.

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Stainless Steel Grades

Austenitic: 304 / 304L / 316 / 316L / 316SL / 316TI / 321 / 317L / 317LNSuper Austenitic: 904L / 254SMO / N08926 / N08800 / AL6XNDuplex: S32101 / S32304 / S32205 / S31803 / S32750 / S32760Inconel: 600 / 601 / 602 / 625 / 825Ferritic: S44100 / S44400 / S43035Heat resisting steels: 310S / 321H / 304HIncoloy + Hastelloy: on request

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Stainless Steel Grades

Stainless Steel Grades

Austenitic: 304 / 304L / 316 / 316L / 316SL / 316TI / 321 / 317L / 317LN Super Austenitic: 904L / 254SMO / N08926 / N08800 / AL6XN Duplex: S32101 / S32304 / S32205 / S31803 / S32750 / S32760 Inconel: 600 / 601 / 602 / 625 / 825 Ferritic: S44100 / S44400 / S43035 Heat resisting steels: 310S / 321H / 304H Incoloy + Hastelloy: on request

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ZM STEEL CONSTRUCTIONS

The success of such projects requires high level supervision, technical competence, and organisation, as priorities. Thanks to our experienced team members we can place key solutions into the hands of those who integrate: study, conception, construction and assembly.

TECHNICAL AND COMMERCIAL ASSISTANCE

Zwahlen & Mayr develops your projects looking for the most constructive and economical solution.

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