A method of manufacturing a clad product in which a metallic substrate material is extruded and a cladding material is then brought into intimate contact with the heated extrudate before the extrudate has had an opportunity to cool to room temperature. The cladding material is compressed against the...http://www.google.fr/patents/US6213385?utm_source=gb-gplus-shareBrevet US6213385 - Method of cladding tubing and manufacturing condensor cores
Method of cladding tubing and manufacturing condensor cores