1>specifications:

material: High quality loe carbon steel wire

tensile strength:300-600N/mm2

2>Black annealed wire features:

black annealed wire is rust proof within 6 months without any oil coating

the tensile strength is 300-400 Newton per square millimeter.

3>Usage :

it can be used in construction , making nails , making binding ,and so on .

we are manufacturers of Black annealed wire .

if you need it ,please contract me .we would quote our best price for you