Galvanized steel wire for armored cable

Galvanized steel wire is also called low carbon galvanized steel wire, and low carbon galvanized steel wire can be used for producing cable/optical cable/wire steel wire.

The galvanized low carbon steel wire for communication has strict requirements on the electrical resistivity, so the chemical composition of the raw material must ensure that the electrical resistivity of the finished wire is qualified. The surface treatment, drawing and heat treatment process of steel wire is similar to general-purpose low-carbon steel wire , but requires a thicker zinc layer, and some are passivated after galvanizing, that is, the galvanized steel wire is immersed in chromic acid and sulfuric acid. In the mixed solution of nitric acid, a passivation protective film having a mixed color of iridescence or light yellow, light green, light red or the like is formed on the surface of the zinc layer to further improve the corrosion resistance of the steel wire. The steel wire is annealed before galvanizing. The galvanized low-carbon steel wire for armored cables with a tensile strength of 345 to 490 MPa also requires a thicker zinc layer, and some require passivation after galvanizing.