This Standard establis es the requirements that must be met by hot-drawn copper rods, black (oxidized) or clean (deoxidized), with diameters between 6.35 and 34.9 3 mm suitable for the subsequent manufacture of electrical conductors.
NORVEN 64-4-1967 history
1967NORVEN 64-4-1967 Copper round wires (used in the production of circuit conductors) are stretched at high temperatures