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Fettling Passivation Marking

Post Galvanizing Finishing in Chennai – Zinc Drip & Burr Removal

At RR GALVAGLOW, we don’t stop at galvanizing – we perfect it. Our post galvanizing finishing ensures your steel parts are burr-free, smooth, and application-ready.

Whether you're preparing guardrails, lighting poles, bolts, or fabricated frames, our finishing workflow enhances both safety and coating longevity.



RR GalvaGlow

Why is Post Galvanizing Finishing Important?

Galvanized parts come out of the molten zinc bath with:


Excess zinc drips

Sharp edges or burrs

Coated threads or blocked bores

Left untreated, these flaws can:

  • Damage surrounding parts during assembly
  • Cause injuries during handling
  • Fail QA during infrastructure inspections

That’s where our finishing station comes in.

Our Finishing Process Overview

Step Stage Description
1 Zinc Drip Removal Manual fettling with chisel or grinder
2 Burr Edge Grinding Rotary smoothening of sharp zinc clusters
3 Thread & Bore Cleaning Tapping threads, bore brushing, air blast cleaning
4 Water Quenching Rapid cooling for coating hardness & shine
5 Surface Inspection Visual + micrometer check for surface smoothness

Equipment & Specs

  • Fettling benches with zinc dust extraction
  • Flexible grinders & rotary burr tools
  • Compressed air lines for bore/thread blast
  • Quenching tanks with auto-drain
  • Anti-scratch padding for delicate parts

Common Applications

  • Transmission pole ends with open bores
  • Guardrail ends that require handling safety
  • Telecom & antenna pole threads
  • Fabricated structures with weld overlaps
RR GalvaGlow – ISO 1461 & ASTM A123 Certified

Post-Galvanizing Finishing in Chennai – Precision Grinding, Dressing & QC Inspection

Service Across Chennai

We finish and dispatch galvanized steel to:

  • Ambattur & Thirumullaivoyal
  • Manali, Red Hills, Madhavaram
  • SIPCOT-Oragadam & Gummidipoondi
  • Sriperumbudur Industrial Zone

Quality Assurance & Standards

  • Burr-free finish per ISO 1461 & ASTM A123
  • Visual inspection + digital micrometer scan
  • Thread clearance validation before dispatch
  • Optional zinc coating measurement available

Schedule Finishing or Job Work

Get perfectly finished steel from Chennai’s trusted zinc partner.

Call: +91 994 033 2979

Email: sales@rrgalvaglow.com

Thread Rework | Burr Removal | Job Work Available

Frequently Asked Questions

What is fettling in galvanizing?

Fettling is the manual removal of excess zinc, burrs, and sharp projections after galvanizing.

Why is water quenching done?

Quenching rapidly cools galvanized steel to improve coating hardness, minimize white rust, and increase shine.

Can you clean blocked threads after zinc dip?

Yes. We offer tapping, brushing, and compressed air bore/thread cleaning.

Do you finish small fasteners and brackets?

Yes. We handle all sizes, from small bolts to long poles.

Hot dip galvanizing plant in Chennai – zinc kettle at 450°C
ISO 1461 coating thickness 100 μm – QA inspection with magnetic gauge
ASTM A123 compliant withdrawal – smooth zinc flow-off and finishing
Fluxing tank with zinc ammonium chloride – uniform wetting before dip
Degreasing and acid pickling line – rust and mill scale removal
Dual rinse stations – clean substrate for consistent zinc coating
Quenching and passivation – surface protection after galvanizing
Galvanized cable trays after finishing – burr-free edges
Galvanized octagonal lighting poles – inside-out coverage
W-beam guardrails – smooth, safe edges after fettling
Solar MMS galvanized structures – posts, rails, and purlins
Final visual and adhesion checks – PQC report before dispatch
Contact Us
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