These are Cable armouring wires in round and formed sections used for armouring of all grades of electric cables. These wires prevent the cable from getting damaged during digging, provide strength to the cables and some times used as earth wire.
Used in armouring of land cables.
Round Wire: Min. 0.90 MM , Max. 4.00 MM
Formed Wire: 4.0 x 0.8 MM, 6.10 x 1.4 MM