1. The hardness of cold drawn wire is very high
After physical compression, although the diameter of the cold drawn wire is forcibly changed, the hardness becomes higher due to the compression, so that it can support the column without being squeezed.
2. The plasticity of cold drawn wire becomes smaller
After many times of compression and stretching, the body density of the cold drawn wire becomes very small, and the plasticity is very small, which avoids the deformation and distortion caused by the long-term use of the house, and plays a decisive role in the quality of the house.
