At Hadid Galvanizing, we take pride in being recognized as Bangladesh’s most trusted name in hot-dip galvanizing.
With cutting-edge technology and a dedicated team, we deliver world-class
corrosion protection for steel structures—ensuring they stand strong for
decades.
What
is Hot-Dip Galvanizing?
Hot-Dip Galvanizing is a highly effective method to protect steel and iron from
rust and corrosion. The process involves immersing fabricated steel into molten
zinc, forming a strong zinc-iron alloy coating that bonds metallurgically
with the base metal. This layer acts as both a physical barrier and a sacrificial
shield, ensuring long-lasting protection even in harsh environments.
Our
Galvanizing Process—Step by Step
We follow internationally recognized
standards to ensure precision, safety, and consistency at every stage:
Material
Receiving & Inspection: All materials are checked upon arrival. Any issue—like design flaws or
contaminants—is promptly communicated to the client.
Caustic Cleaning: Oils, grease, dirt, and paint are removed using a heated caustic solution.
Acid Pickling: Surface rust and scale are cleaned off using a mild acid bath.
Rinsing: Thorough rinsing removes residual acid and iron salts before moving to the next
step.
Fluxing: A zinc-ammonium chloride solution preps the surface, eliminating moisture and
oxides.
Galvanizing: The cleaned steel is dipped into molten zinc, forming a protective zinc-alloy
coating. Immersion time depends on material thickness.
Quenching: Rapid cooling halts the reaction and helps prevent white rust formation.
Finishing
& Quality Checks: We inspect surface finish, test coating thickness (ASTM standards), and weigh
materials for verification.
Packaging
& Delivery: After passing all tests, materials are carefully packed and shipped safely to
your location.
Why Hot-Dip Galvanizing?
Long-Term Protection – Up to 50+ years of service life
Exceptional Corrosion Resistance – Zinc coating shields even in coastal or industrial areas
Low Maintenance – No need for frequent touch-ups
Eco-Friendly—Steel and zinc are both 100% recyclable
Pricing varies depending on:
Steel size, thickness & shape
Surface condition before processing
Required coating thickness
Current zinc market rates
For a better offer, feel free to contact
us with your specifications.
Our
Galvanizing Services
We support a wide range of industries and project sizes:
✔️ Custom Galvanizing – For beams, pipes, brackets, and complex steel parts
✔️ Large Project Capability – Perfect for bridges, towers, factories, and infrastructure
✔️ Fast Delivery—We deliver on time, every time
✔️ Strict Quality Testing – ASTM and ISO-compliant inspections
✔️ De-Coating & Repair – Reconditioning for old galvanized parts
Hot-Dip Galvanizing vs. Electroplating Variation Analysis:
|
Feature |
Electroplating |
Hot-Dip Galvanizing |
|
Process |
Thin metal coating via electrical current |
Dipping steel into molten zinc |
|
Coating Thickness |
2–25 µm (light) |
50–100+ µm (heavy-duty) |
|
Durability |
Decorative, light wear |
Robust, industrial-grade protection |
|
Corrosion Resistance |
Moderate (indoor use) |
Excellent (outdoor/harsh environments) |
|
Maintenance |
Requires frequent recoating |
Virtually maintenance-free |
|
Eco-Friendliness |
More chemical waste |
Fully recyclable and environmentally safe |
|
Common Uses |
Electronics, jewelry, auto parts |
Pipelines, towers, guardrails, structures, etc. |
Why Choose Hadid Galvanizing?
✅ Bangladesh’s most reliable hot-dip galvanizing plant
✅ Advanced machinery & internationally approved methods
✅ Experienced team with hands-on industry knowledge
✅ Secure packaging and timely delivery
✅ Supportive service from inquiry to handover
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