Tubular welding systems with laser for manufacturing thin-walled metal tubes

NanoWEMA and MicroWEMA weld seams from Nexans set new standards in speed and quality

Hanover, 24 April 2017 – Working with the latest laser technology, Nexans has developed tubular welding systems for smooth and corrugated tubes and cable sheaths that are suitable for use in the cable and tube industries as well as for applications in the steel, automotive and electronics industries, and in medical technology. Stainless steel, copper, aluminium etc. are typically used as raw materials.

With the NanoWEMA weld seam, extra-thin tubes with diameters of 2 mm to 4 mm and material thicknesses of less than 0.1 mm can be welded perfectly. This obviates the need for many expensive and space-intensive finishing steps to achieve further reductions in wall thickness and diameter, such as those that would otherwise be necessary for manufacturing cannulae. The quality of the weld seams is monitored and their quality documented with the UNItherm® system developed for NanoWEMA. The MicroWEMA laser longitudinal seam welder welds tubes with diameters of 2 mm to 25 mm and wall thicknesses of 0.1 mm to 0.3 mm.

High-quality butt and welding joints on metal bands are made possible by the mobile, semi-automatic UNIcross 170L laser cross welder. It can be used directly in the production line. In the case of laser welding, no pre-treatment of polymer-coated metal bands is required. Depending on the feedstock, band thicknesses of 0.1 mm to 0.5 mm can be machined. Band widths of 5 mm to 168 mm are possible and, upon request, even as much as 1050 mm.

With all machines, the advantages of the laser system over conventional welding methods are evident – namely, simple operation and low energy consumption. Not only that, but the systems are much quicker. Customers benefit from weld quality that can be reproduced irrespective of the operator, as pre-configured settings can be saved. Smooth and durable weld seams are the result. Furthermore, thanks to the laser, these are neat and tidy, which means that there is no need for time-consuming clean-up work.

WEMA NanoWEMA tubular laser-welding system from Nexans


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Nexans Germany

Nexans Germany is one of the leading cable manufacturers in Europe. The company is offering an extensive range of high performance cables, systems, and components for the telecommunications and energy sectors, rounded off by superconducting materials and components, Cryoflex transfer systems and special machinery for the cable industry. Producing at manufacturing plants with approx.. 11,000 employees in Germany and abroad, the sales in 2016 amounts to approx. thousand million Euro. The full integration into the Nexans Group Nexans Germany also benefits from excel-lent opportunities to use the available synergies in all corporate fields, which not only applies to worldwide projects but also to research and development, the exchange of know-how, and to other areas. More information on