Seven-strand steel wire cord with (1+6+12)+6(1+6+12) structure

The invention provides a seven-strand steel wire cord with a (1+6+12)+6*(1+6+12) structure. The seven-strand steel wire cord is characterized in that six steel wires are twisted around a core steel wire to form a first layer, 12 steel wires are uniformly arranged around the first layer and are twisted in the same direction to form a second layer, and a center core strand and outer strands are formed; finally, the six outer strands are uniformly arranged around the center core strand and are twisted to form the steel wire cord with a circular cross section. The seven-strand steel wire cord has the advantages that the strands of the steel wires of the first layer and the second layer of the center core strand and the outer strands are twisted in the same direction, the diameters of the steel wires between the layers are different, the permeation of rubber is favorable, and the anti-corrosion property, adhering property and adhering retaining capability of a tire are improved; the manufactured steel wire cord ha