Radadia Engineering

Your Metal, Our Expertise – Why Choose Radadia Engineering?

Uniform Zinc Coating – Prevents excess buildup on threads and small parts.

Corrosion & Rust Resistance – decades of protection against moisture, chemicals, and extreme environments.

Improved Thread Fit – Ensures bolts, nuts, and fasteners maintain proper functionality.

Durability & Strength – Enhances the lifespan of critical components.

Eco-Friendly Process – Uses recyclable zinc with minimal waste.

Precision in Motion – How Our Spin Galvanizing Plants Deliver Excellence

1. Surface Cleaning – Preparing for Perfection

Before starting the process, every component undergoes a thorough deep cleaning to remove dirt, grease, oil, and oxidation. This step plays an important role in ensuring that the zinc coating adheres properly and prevents inconsistencies or weak spots in the final layer.

2. Pre-Flux Treatment – Strengthening the Bond

Once cleared, the metal is now treated with a pre-flux solution, which removes any other remaining oxides and elevates the chemical bounding between the base product and molten zinc. This process secures a flawless and uniform coating.

3. Hot-Dip Immersion – Total Zinc Coverage

The fully cleaned and pre-treated parts are now immersed into molten zinc, at a temperature ranging around 450°C (840°F), which creates a metallurgical bond between the zinc and metal or steel, forming an even and long-lasting protective layer.

4. High-Speed Spinning – Precision Coating Without Excess

Immediately after dipping into the zinc, now the parts are spun at high speeds in specialized centrifuges, which remove excess zinc, ensuring threads, small holes, and fine details remain fully functional while still covering complete corrosion protection.

5. Cooling & Solidification – Locking in Durability

After spinning, the galvanized parts are now cooled to harden the protective zinc layer. This helps to enhance the structural integrity of the coating, providing the long-term resistance against corrosion, abrasion, and environmental damage.

6. Final Inspection – Quality You Can Trust

Our testing process follows industry standards (ISO, ASTM, and EN so that every piece fulfills its quality requirements. The verification process of thickness, adhesion, and surface finish by experts validates perfect coating conditions across every part for lasting durability.

From Tiny Fasteners to Tough Machinery – Our Spin Galvanizing Plant Does It All!

1. Construction & Infrastructure

Corrosion-resistant bolts, nuts, washers

Brackets and fittings

Reinforcement components

2. Automotive Industry

Fasteners for engine and chassis

Rust-resistant small parts

Screws and clips

3. Power & Electrical

Connectors, clamps, grounding components

Fasteners for power distribution

Support structures for transformers

4. Industrial Machinery

Coated gears, springs, moving parts

Rust-free machine brackets

Threaded components

5. Railways & Transportation

Fasteners for rail tracks

Connectors for mechanical applications

Brackets and supporting structures

6. Marine & Coastal Applications

Saltwater-resistant nuts, bolts, fixtures

Offshore structures and shipbuilding

Docks and marine equipment fittings

7. Fasteners & Fittings

Bolts, screws, threaded rods

Coated small intricate components

Fastening hardware for moisture exposure

Corrosion-resistant fencing for coastal areas

8. Agricultural Equipment

Plow bolts, hinges, brackets

Irrigation and storage system components

Fasteners for farming machinery

9. Oil & Gas Industry

Coated pipeline clamps, supports

Fasteners for drilling rigs, refineries

Components for high-pressure environments

10. Telecommunications

Brackets, mounts, hardware for towers

Screws and fasteners for installations

Coated satellite and communication equipment

Spin Galvanizing