TREFILADOS DE NAVARRA S.A. (TREFINASA)

Welcome to TREFINASA TREFINASA is a company created in 1999 with the first oblective of manufacturing aluminium clad steel wire by the continious extrusion process. These wires are used in electrical industry, more concretely in manufacturing optical ground wire (Opgw) and conductor cores destined to overhead electrical lines. TREFINASA, using the same continious extrusion process, manufactures aluminium tube with optical fibre inside for OGPW. In the same way, TREFINISA manufacturers aluminium profiles and tubes for electrical industry and refrigeration industry. Finally, Trefinasa has started manufacturing low sag conductors. These conductors are able to transmit more electrical current than their equivalent conductor, keeping safety clearances. TREFINASA supplies to most important Eoropean OPGW and ACSR manufacturers, as well as to different elctrical companies and appliance companies.