Continuously sheathing a metal tube

摘要

Two lathes turn horizontally and are set apart vertically and a tube guide-path is set between them with slight inclination. The path goes down a helical course with few spirals between two tue feed devices where insulation sheathing is applied. The extrusion head and sheath smoothing devices, as well as the cooling stage are set one after the other, according to the slope of the helix. Used to apply heat insulation and soundproofing.