... .Packing;Plastic then weaving bag Black Iron Wire 1.Wire Material:The main wire material of Black Iron Wire is carbon steel wire.2.Surface Treatment:The ... and corrosion.3.Color: plain black.4.Forms available:Coil wire, spool wire, U type wire, Tie wire,Straight cut wire, etc.5.Packing: PE film ... widely used in construction or daily use as binding material. Black Iron Wire/Black wire/Annealed wire