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Hot-dip Galvanized Wire

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Hot-Dip Galvanized Wire Product Introduction

Hot-dip galvanized wire is a metal wire processed through a hot-dip galvanizing process, widely used in construction, agriculture, industry, and other fields. Here is its product overview:

1. Product Definition
Using high-quality low-carbon steel wire as the base material, it is immersed in high-temperature molten zinc to form a uniform and dense zinc coating on the surface. The thickness of the galvanized layer typically ranges from 60-150μm, significantly enhancing the corrosion resistance and service life of the steel.

2. Core Process
Pre-treatment: Remove surface rust and impurities through pickling.
Hot-dip galvanizing: Immerse the wire in zinc liquid at approximately 450℃ to form a metallurgical bonding layer.
Cooling and finishing: After cooling, perform drawing or winding to ensure a smooth surface without zinc nodules.

3. Product Features
Strong corrosion resistance: The zinc layer isolates air and moisture, suitable for harsh environments such as humidity and high salinity.
Long service life: It can be used for 10-30 years under normal conditions, 3-5 times longer than ordinary iron wire.
Environmentally friendly and safe: The galvanizing process meets environmental standards, and the coating is non-toxic and harmless.
Good processability: It can be bent and welded to meet processing requirements in various scenarios.

4. Main Applications
Construction: Scaffolding fixation, steel bar binding, exterior wall insulation mesh.
Agriculture: Fencing, breeding nets, greenhouse supports.
Industry: Conveyor belts, filter meshes, cable trays.
Daily use: Craft making, home decoration, packaging strapping.

5. Specification Parameters
Diameter range: 0.3mm-6.0mm (customizable).
Zinc layer weight: 40-300g/㎡ (selectable according to needs).
Surface finish: Smooth, matte, or colored coatings (e.g., black, green).

With its excellent performance, hot-dip galvanized wire serves as an economical and practical alternative to ordinary iron wire, particularly suitable for long-term outdoor or corrosive environments.
Product Details of Hot Dip Galvanized Iron Wire


Hot dip galvanized iron wire is a corrosion-resistant steel wire product processed through hot-dip galvanization, offering long-term durability and versatility across various industries. Below is a detailed breakdown of its specifications and features:


Product Details of Hot Dip Galvanized Iron Wire


Hot dip galvanized iron wire is a corrosion-resistant steel wire product processed through hot-dip galvanization, offering long-term durability and versatility across various industries. Below is a detailed breakdown of its specifications and features:


1. Definition and Raw Materials


  • Definition: Hot dip galvanized iron wire is made from low-carbon steel wire rods (e.g., Q195) through processes including drawing, heating, and hot-dip galvanization. The surface is coated with a zinc layer to enhance corrosion resistance.

  • Raw Materials: High-quality low-carbon steel wire rods (e.g., 1006, TS06, Q195) and zinc ingots with ≥99.995% purity.



2. Manufacturing Process


  • Steps: Acid pickling and rust removal → Water washing → Flux solution treatment → Drying → Hot-dip galvanization (in 500℃ zinc bath) → Cooling → Passivation → Cleaning → Polishing → Finished product.

  • Process Advantages: Thick, uniform zinc coating with strong adhesion to the steel substrate, ensuring superior corrosion resistance for outdoor applications.



3. Product Specifications


  • Wire Gauges & Dimensions:
    • Imperial Gauges: SWG (British Standard), BWG (Birmingham), AWG (American).
    • Metric Diameters: Range from 0.15mm to 6.0mm, corresponding to different gauge numbers (e.g., SWG 8 ≈ 4.06mm, AWG 18 ≈ 1.02mm).

  • Zinc Coating Weight: Classified into grades A to F based on application environments, with coating weights ranging from 30g/m² to 290g/m² (e.g., ≥50g/m² for diameters >5.20mm).



4. Key Properties


  • Corrosion Resistance: Zinc layer acts as a physical barrier, protecting against rust for decades in outdoor conditions.
  • Mechanical Strength: Excellent ductility and elasticity, with tensile strength ranging from 290-1200MPa (varies by diameter).

  • Coating Uniformity: Complies with GB/T 15393 standard, passing five copper sulfate dip tests without iron exposure.



5. Applications


Industrial: Metal meshes, highway guardrails, power transmission towers, chemical equipment.

  • Agricultural: Fencing, livestock enclosures, bundle.
  • Construction: Rebar tying, scaffolding, plastering nets.

  • Household: Craftworks, packaging, daily bundling.




6. Classification & Comparison


Hot Dip Galvanized Wire: Thick coating (30-300μm), matte appearance, high corrosion resistance for harsh outdoor environments.

  • Cold Galvanized (Electroplated) Wire: Thin coating (3-15μm), shiny finish, lower cost but prone to rust, suitable for indoor or short-term use.



7. Packaging & Standards


  • Packaging: Available as spooled wire (1-100kg) or bulk coils (250-1000kg) based on diameter.

  • Standards: Complies with GB/T 343 (low-carbon steel wires) and GB/T 15393 (zinc coating) standards.



Hot dip galvanized iron wire is a cost-effective and durable solution for industrial, agricultural, and construction needs. Choose based on environmental factors (indoor/outdoor, humidity) and specific requirements (zinc coating thickness, tensile strength).


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