Hot dipped galvanized woven wire mesh

Hot-Dipped Galvanized Woven Wire Mesh Product Introduction

1. Product Definition

Hot-Dipped Galvanized Woven Wire Mesh is a type of metal mesh manufactured by weaving high-quality steel wires on industrial looms, followed by a hot-dip galvanizing process where the completed mesh is immersed in a bath of molten zinc. This creates a thick, metallurgically bonded zinc coating that provides superior corrosion resistance. It is distinct from welded mesh due to its woven structure, which offers different mechanical properties.

2. Core Material

• Base Material: High-quality low-carbon steel wire (typically equivalent to grades like Q195or AISI 1006-1010, offering a good balance of strength and formability.

• Coating: High-purity zinc (Zn ≥ 99.5%). The hot-dip process forms a robust zinc-iron alloy layer topped with a pure zinc layer, firmly bonded to the steel substrate.

3. Manufacturing Process

1. Wire Drawing: Steel rod is cold-drawn to the specified diameter.

2. Weaving: Wires are woven on specialized looms. Common weaves include:

◦ Plain Weave: Each warp wire passes alternately over and under each weft wire. Most common and economical.

◦ Twill Weave: Each warp wire passes over two and under two consecutive weft wires, creating a diagonal pattern. Offers smoother surface and greater flexibility.

3. Hot-Dip Galvanizing: The entire woven mesh panel or roll is cleaned (acid pickled), fluxed, and then immersed in a molten zinc bath at approximately 450°C (840°F).

4. Cooling & Finishing: The mesh is withdrawn, allowing the zinc to solidify, and then cooled. It may be leveled or cut to size as required.

4. Zinc Coating Weight & Standards

• Coating Weight (Zinc Mass): Typically ranges from 60 g/m² to over 200 g/m², depending on the wire diameter and application requirements.

◦ Standard/Commercial: ~60-90 g/m²

◦ Heavy Coat: 120-200+ g/m² (for harsh environments)

• Common Standards: ASTM A740 (US), BS 443 (UK), ISO 1461, AS 4687 (AU/NZ), and equivalent national standards (e.g., GB/T in China).

5. Key Product Advantages

1. Superior Corrosion Resistance: The thick, alloy-bonded zinc coating provides long-lasting protection against rust and corrosion in outdoor and industrial environments, significantly extending service life compared to electro-galvanized mesh.

2. Excellent Flexibility & Resilience: The woven structure allows the mesh to withstand vibration, impact, and deformation without fracturing. It can be easily formed, cut, and installed.

3. Good Stability & Durability: The metallurgical bond prevents the coating from peeling or flaking, even when the mesh is bent or shaped.

4. Versatility: Suitable for a vast range of applications, from filtration to fencing, due to its combination of strength, corrosion resistance, and weave patterns.

5. Cost-Effectiveness: Offers a favorable balance between performance, longevity, and cost, often providing better lifecycle value than painted or lightly coated alternatives.

6. Common Specifications & Models

7. Primary Applications

1. Filtration & Screening: Industrial filters, vibrating screens for aggregates/minerals, coal sorting, soil sifting, window insect screens.

2. Security & Fencing: Perimeter fencing, animal enclosures, aviaries, machine guards, safety barriers.

3. Construction & Reinforcement: Plaster/render reinforcement (stucco netting), gabion baskets, lightweight concrete reinforcement, trellising.

4. Agricultural & Horticultural: Poultry netting, tree guards, compost bins, plant support, greenhouse shading.

5. General Industrial & Decorative: Partitioning, storage racks, infill panels, decorative elements, and craftwork.

8. Packaging & Shipping

1. Roll Packaging: Mesh is tightly wound onto a sturdy core (paper/plastic tube), wrapped in waterproof paper or plastic film, and bound with steel or plastic straps. Outer protection with woven PP fabric or kraft paper is common.

2. Sheet (Panel) Packaging: Flat panels are stacked, separated by protective paper or foam sheets, placed on wooden pallets or in steel frames, and securely banded. The entire package is then shrink-wrapped or crated.

3. Labeling: Each package bears a clear label detailing Product Name, Specification (Wire Ø, Mesh Size, Width/Length), Material, Coating Weight, Net/Gross Weight, Lot/Date Code, and Standards.

4. Shipping: Packages must be handled carefully to avoid sharp impacts, heavy compression, and exposure to moisture. They should be securely stowed to prevent deformation during transit.