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Sewing zinc and lead

Zink und Blei vernäht

Nowadays roofs are presumed to have a useful life of 30 years. A customer drew our attention to a material bonding under a roof ridge that had until then always been welded. Thermal influences cause the material to work, resulting in problems with the weld seam.

The idea: a stitched seam would be able to react more flexibly here. KSL developed a machine fitted with a special needle transporting system which uses needle size 230! The needle pierces the metal without holes needing to be drilled beforehand.

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