Dimensions
Diameters 5 -114.3 mm 0.196 – 4.50 inch
Thickness 0.30 – 5.00 mm 0.01 – 0.157 inch
Length up to 30 m up to 100 ft
U-bent tubes
Short cuts from 4 mm from 0.157 inch
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, pharma, 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.
Since ZM TUBES is equipped with its own coil slitting line, it is fully flexible and able to modify the final diameter at the very last moment. Strips are first formed along the width and then TIG (tungsten inert gas) or laser welded at the edges along the length. Welding is carried out without any filling material.
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 of heat exchangers, evaporators, condensers and feedwater heaters. We deliver both straight and U-bent tubes with a length of up to 30 meters.
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.
Precision is not a matter of chance at Zwahlen & Mayr! Thanks to 40 years of “Swiss made” expertise, using highly skilled staff and continually investing in technological improvements, we have managed to maintain our position at the highest level of redrawn precision technology. 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.
These tubes then go through a special redrawing process in order to achieve extremely precise characteristics, such as: Narrow tolerances, Ultra smooth surface with specific roughness outside and inside, Specific mechanical values, Very short tubes (min. 4 mm – 0.157 inch). Outer surface tubes are supplied with different finish such as BA bright annealed or polished.
