... wire factory, free sample Binding Wire (factory)1. Name: black iron wire, also named black wire, black annealed iron wire, soft anneal iron wire, black oil iron wire or carbon steel iron wire ... construction or as binding materials.6. Specifications:Black Annealed Iron Wire(Soft Annealed Iron Wire)Specification0.5mm-6.0mmTensile strength30kg-70kg/mm2Elongation Rate10%-25 ...