Black iron wire is more softer than normal steel wire, more flexibility and softerness,, its color is consistent.. annealed wire has became soft, flexibility increases, for building tie wire, building reinforcement effect is better.. 

Packaging Details: 1.packing in 10kg--500kg per coil
2.inside plastic film outside woven bag or hessian cloth
3.loading by 20ft container,one full container can loads about 25 tons
4.shiping by sea , delievery time is 30 -- 40 days

Delivery Detail: within 15--20 days as we get your advance

Peter 

+86 138 3214 7672