This article has been intended as two parts. The aim of the first part is to point out manufacturing parameters of the material components of ACSS/TW (aluminium conductor steel supported/trapezoidal wire) conductor. The second part of it explains processing steps and required machinery for manufacturing. Electric power consumption has been increasing uninterruptedly, being this increase specially accelerated in recently. New power generators have been built, the installed power increases each year, thus it is necessary a way to transmit the bulk energy. Nowadays electric lines are saturated; they are reaching critical values of ampacity and sag. Therefore building new lines is necessary to provide the ever-increasing consumption.