1. When lead-fired wire is galvanized, although its strength limit and toughness are weakened, the strength and toughness of hot-dip galvanized steel wire are higher in the subsequent drawing process.
2. The mechanical properties of the steel wire made with the pre-drawn hot-dip galvanized steel wire of the middle size are not stronger than that of the galvanized steel wire after drawing.
3. The strength limit of the steel wire drawn with zinc-plated lead wire is lower than that of the steel wire drawn with the same size light material. This difference increases with the decrease of the wire diameter, especially For thin steel wires, the difference is even greater.
