... two kinds of black iron wire, one is hard drawn wire, another is soft annealed wire.Hard drawn wire is the suitable material of iron nail, wire mesh, craftwork and ... : Black soft annealed wire & Bright soft annealed wire or is named Soft annealed wire oxygen free.Diameter: BWG16,18#, 19#, 20#, 22#, are the most popular sizes for salePacking: in coil ...