Galvanized steel strand wire process requirements
1. The inner steel wire (including the central steel wire) of the steel strand should be of the same diameter, the same strength, and the same zinc layer level.
2. The diameter and lay length of the steel strand should be uniform and not loose after cutting.
3. The steel wires in the steel strand should be tightly stranded? There should be no staggering, breaking and bending.
4. The steel strand should be straight, soft, and small in residual stress? It should not appear in a ∽ shape after unfolding.
5. Joints are not allowed for 1×3 structural steel strands and overhead ground wires. The inner steel wire joints of other types of steel strands should be welded butt joints, and the distance between any two joints should not be less than 50m. The joints should be treated with anti-corrosion.

Galvanized steel strand wire usually refers to used for bearing cable, cable, reinforcement core, etc., but also can be used as overhead transmission line, highway on both sides of the blocking cable or structural cable in the building structure. The commonly used prestressing wires are low-relaxation prestressing wires without coating or galvanizing, which are often used in Bridges, buildings, water conservancy, energy and geotechnical engineering, etc. Unbonded prestressing wires are often used in floor and foundation engineering, etc