Galvanized welded wire mesh rolls are produced by intersecting low-carbon steel wires at right angles and fusing them with electric resistance welding, followed by a hot-dip zinc coating that provides corrosion resistance.

The resulting product combines uniform aperture geometry with a continuous zinc layer, delivering consistent mechanical performance in structural and protective applications.

Material Characteristics and Standard Dimensions

The base wire is typically cold‑drawn low‑carbon steel with a tensile strength ranging from 350 MPa to 450 MPa before galvanizing.

Wire diameters available for custom rolls span from 0.8 mm to 3.0 mm, enabling mesh openings from 6 mm × 6 mm up to 100 mm × 100 mm.

Roll widths are commonly supplied between 0.5 m and 2.5 m, with lengths customized to 10 m, 20 m, 30 m or continuous lengths upon request.

Mass per linear meter varies with wire size and opening; for example, a 1.6 mm wire, 50 mm × 50 mm mesh yields approximately 1.2 kg/m.

Production Steps

Wire is first drawn to the specified diameter and straightened before being fed into a welding grid where electrodes apply precise pressure and current to create spot welds at each intersection.

Immediately after welding, the mesh passes through a hot‑dip galvanizing bath at approximately 450 °C, where a metallurgical bond forms between the zinc and steel surface.

Coating thickness is controlled by withdrawal speed and bath composition, typically achieving 55 µm to 85 µm of zinc per side.

After cooling, the rolls are tension‑leveled to relieve residual stress and inspected for weld integrity and coating uniformity.

Customizable Parameters

• Wire diameter: 0.8 mm – 3.0 mm (in 0.1 mm increments)
• Mesh opening: square or rectangular from 6 mm × 6 mm to 100 mm × 100 mm
• Roll width: 0.5 m – 2.5 m (custom slit widths available)
• Roll length: standard 10 m–30 m or continuous lengths up to 500 m
• Zinc coating: hot‑dip 55–85 µm per side or electro‑galvanized 10–20 µm upon request
• Edge treatment: plain, twisted, or PVC‑capped for safety handling

Typical Industrial Applications

In concrete reinforcement, the mesh provides distributed tensile capacity that controls cracking while the zinc coating protects against alkali‑silica reaction and moisture ingress during curing.

For perimeter fencing in agricultural facilities, the uniform aperture prevents animal intrusion and the welded joints resist deformation under impact loads, extending service life beyond woven alternatives.

In filtration and screening equipment, the precise opening dimensions allow consistent particle separation, and the smooth weld surface reduces fouling compared to woven meshes.

Additional uses include machine guards, gabion baskets, and safety barriers where predictable load‑deflection behavior and corrosion resistance are critical design factors.

Inspection and Testing Protocol

Each production lot undergoes visual inspection for weld completeness and coating continuity under 10× magnification.

Tensile strength of the base wire is verified per ASTM A370, with acceptance criteria of ≥350 MPa.

Zinc coating adhesion is assessed by the bend test (ASTM A653) where no flaking occurs after a 180° bend over a mandrel equal to the wire diameter.

Roll dimensions are measured with laser gauges; width tolerance is ±2 mm and length tolerance ±0.5 % of nominal.

A random sample from each batch is subjected to salt‑spray exposure (ASTM B117) for 500 hours; acceptable corrosion rate is less than 0.02 mm/year.

Packaging Methods

Rolls are wound onto steel or cardboard cores with inner diameter 50 mm, then wrapped in polyethylene film to prevent surface abrasion.

For lengths exceeding 20 m, the roll is split into multiple sections and secured with strapping bands at 0.5 m intervals to maintain tension during transit.

Each package carries a label indicating wire diameter, mesh opening, coating type, roll length, and batch number for traceability.

Standard pallet configuration holds up to 16 rolls, facilitating containerized shipment and reducing handling time at destination.

Typical Technical Data (Customizable)

Frequently Asked Questions

• Can the mesh be supplied with PVC coating? Yes, a PVC‑capped edge or full‑mesh PVC overcoat can be applied upon request for additional abrasion resistance.
• What information is required for a quotation? Wire diameter, mesh opening, roll width, desired length, coating type (hot‑dip or electro‑galvanized), and any edge treatment.
• How is quality inspected? Visual weld inspection, tensile testing of wire, zinc coating adhesion bend test, dimensional verification, and salt‑spray corrosion testing.
• What packaging options are available? Standard polyethylene‑wrapped rolls on steel cores, with optional cardboard cores, protective corner guards, and palletized配送.
• What is the typical lead time? Production typically begins within 5‑7 working days after receipt of technical details; total lead time depends on order size and shipping destination.
• Are samples available? Yes, sample lengths of 1 m can be provided free of charge for evaluation, with shipping costs borne by the requester.

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