wire diameter:0.4mm-4.0mm BWG8-BWG22 zinc coating:10-25g/m2 tensile strengh:380-420kn/m2 elongation tate 10%-25% black iron wireThe black wire is made with international standard low carbon steel,though wire drawing,oxygen free annealing and other processes. The black wire has the characteristics of soft ,good corrosion resistance,suitable tensile strengh,etc.and is widely used in constuction , ...