Black iron wire, also called black wire, is mostly used in construction or daily use as binding material. 
Soft annealed wire, also known as annealed wire, offers excellent flexibility and softness through the process of oxygen free annealing. Soft annealed wire is mostly used in woven wire mesh or as wire tie. 
Iron wire can be processed into cut wire or U type wire for binding uses. Manufacturer of Wire and Wire Mesh Weaving & Further Processing