1. Definition：

The steel strand is a steel product composed of multiple strands of steel wire. The surface of carbon steel can be added with galvanized layer, zinc-aluminum alloy layer, aluminum-coated layer, copper-coated layer and epoxy resin as required

2. Surface quality:

1. the surface of the steel wire in the strand should not be imprinted, scratched, broken, flattened and hard bending defects.

2. the surface of the steel strand must be free of oil, dirt, water and other impurities.

3. The galvanized layer on the surface of the split steel wire inside the strand wire should be uniform and continuous, without cracks and spalling. However, the surface of the zinc layer allows a small amount of flash and white thin layer and color difference.

3. Functional use:

Galvanized steel strand is usually used to support the cable, strengthen the core, and can also be used as the ground wire for overhead transmission, the blocking cable on both sides of the highway, or the structural cable in the building structure