What is the acceptable tensile strength for the chain link wire?

The wire should generally have a tensile strength between 400 to 500 MPa.

What are the standard tolerances for the mesh size?

A tolerance of ± 4 percent is permitted on the specified mesh size.

Which Indian Standard dictates the galvanizing thickness for the chain link wire?

The requirements for the zinc coating (galvanizing) mass and testing must conform to IS 4826.

IS 2721

: 1986

Galvanized Steel Chain Link Fence Fabric - Specification

CurrentFrequently UsedSpecificationMaterials Science · Fencing, Gates and Barriers

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This standard lays down the specific requirements for galvanized steel chain link fence fabric used for security, boundary enclosures, and fencing purposes. It defines the acceptable mesh sizes, wire diameters, manufacturing tolerances, and zinc coating (galvanizing) requirements to ensure adequate structural integrity and corrosion resistance.

Covers requirements for galvanized steel chain link fence fabric used in fencing.

Quick Reference Values

standard mesh sizes50 mm, 75 mm, 100 mm

standard wire diameters2.0 mm, 2.5 mm, 3.15 mm, 4.0 mm, 5.0 mm

tensile strength of wire400 to 500 MPa

tolerance on mesh size± 4 percent

tolerance on wire diameter± 0.05 mm

standard fabric roll length10 m to 30 m

Practical Notes

Always specify both the mesh size and the wire diameter together in Bill of Quantities (BOQ), as both heavily impact the weight, cost, and security level of the fence.

Ensure the zinc coating complies with IS 4826. For coastal or highly corrosive environments, specify 'heavily coated' wire to prevent premature rusting.

Verify the actual wire diameter using a micrometer on site before accepting the material, as under-sized wires are a common issue.