What do the zinc steel strand models 1×7 and 1×19 mean, and how do you match different specifications to a project?

Meaning Analysis: 1×7=1 strand of twisted wire, made of 1 central steel wire twisted with 6 outer steel wires. It has a compact structure and moderate flexibility, and is a common option in the market. 1×19 has a double-layer twist, offering higher tensile strength and better fatigue resistance.

Matching Scenarios:

1×7 structure: 35/50/70/80 mm², commonly used for distribution network overhead ground wires, photovoltaic support guy wires, orchard fences, and livestock protective nets.

1×19 structure: larger cross-section specs, higher tensile strength, suitable for high-voltage and ultra-high-voltage lines, bridge prestressed cables, and long-span wind turbine guy wires.

Extras: Galvanized steel strands on the market comply with standards YB/T5004-2012 and ASTM A475. GB or US standard specifications can be customized as needed.