Soft annealed wire Suppliers Types: Black soft annealed wire & Bright soft annealed wire or is named Soft annealed wire oxygen free. Black annealed wire which is made of iron wire, mainly used as tie wire or binding wire in construction. The Black annealed iron wire can also know as the Soft Anneal iron wire. Diameter: BWG16, 18#, 19#, 20#, 22#, are the most popular sizes for sale Packing: in coil, by spool, or can be cut into sizes for binding/bundle USES: Black annealed wire is used as tie wire or baling wire in building, parks and daily bindin.