Method for producing multilayer metal composite tubes

   
   

A process for the production of multi-layer metal composite tubes (10), wherein a metal strip is shaped to form a tube (16) and butt-welded along its two longitudinal edges. A plastic inner layer (12) is applied by extrusion in firmly adhering manner to the inside (12) of the metal tube (16) and a plastic outer layer (14) is applied by extrusion in firmly adhering manner to the outside (26) of the metal tube (16).

Un proceso para la producción de los tubos compuestos del metal de múltiples capas (10), en donde una tira del metal se forma para formar un tubo (16) y empalmar-se suelda con auto'gena a lo largo de sus dos bordes longitudinales. Una capa interna plástica (12) es aplicada por la protuberancia en firmemente adherir manera al interior (12) del tubo del metal (16) y una capa externa plástica (14) es aplicada por la protuberancia en firmemente adherir manera al exterior (26) del tubo del metal (16).

 
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