Galvanized Iron (GI) ERW & HFIW Pipes and Tubes

Product type: Galvanized Iron (GI) ERW Pipes and Tubes, Galvanized HFIW Pipes, and Hot-Dipped GI Pipes engineered for long-term corrosion protection and dependable performance.

Applications : 

GI pipes are widely used where moisture, humidity, and outdoor exposure demand higher corrosion resistance. Suitable for:

Drinking water supply lines, Plumbing and sanitation networks, Firefighting systems
HVAC and ducting support structures, Agricultural irrigation, Fencing and outdoor structural works, and more.

Speciality: Uniform zinc coating for extended corrosion life, IS-compliant test reports available on request, Ready stock in major sizes & schedules, Choice of surface finish (hot-dip, electro-galvanized), Customized lengths (cut-to-size available)
,Pipes supplied from leading Indian brands, Fast, reliable delivery from multiple branches

Standard & Grade:

IS:1239,IS:3589, IS:1161, IS:3601, IS:9295, API 5L (on request)
Custom grades and coatings based on specific project requirements

End Options: Square-cut ends, Beveled ends for welding applications

Surface Finish: Hot-dip galvanized, Electro-galvanized, GI-coated ERW
With or without protective top-coat (red oxide, epoxy, or black enamel)

Branches:

Chennai, Delhi, Mumbai, Ahmedabad, Hyderabad, Kolkata, Bangalore.

 

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Products

Properties

  • Higher resistance to corrosion
  • Affordable alternative to stainless steel
  • Greater solderability
  • Better conductivity

Manufacturer Brands

Jindal Industries Limited (Hisar)
Jindal Pipes Limited (Jindal Star)
Jindal Pipes Limited (Hyderabad, Ghaziabad)
Maharashtra Seamless Limited
Jindal India Limited (Kolkata)
Surya Roshni Limited
Utkarsh Tubes & Pipes Limited
MKK Metal Sections Pvt. Ltd.
Tata Steel Ltd.

Speciality

Galvanized Iron (GI) Pipes offer superior corrosion resistance through a uniform hot-dip zinc coating applied inside and outside. This ensures long-term reliability in water supply, fire-fighting lines, structural works, and general engineering applications where rust protection and durability are essential.

GI pipes deliver consistent thickness, strong weldability, and high tensile strength. With standardized color coding, traceable batch markings, and compliance to IS:1239, IS:3589, and IS:1161, they provide dependable quality and safer installation across demanding project environments.

Why Choose Us as Your Trusted GI Pipe Dealers?

Consult & Buy

We supply GI ERW and HFIW pipes suitable for water supply, structural applications, outdoor usage, and corrosion-prone environments.
 Our GI pipes conform to IS standards and are supplied in:

  • OD × WT sizing
  • SRL (5–6 m) or DRL (10–12 m) lengths
  • Plain or beveled ends

Coating Integrity & Zinc Layer Assurance

Every GI pipe is inspected for:

  • Zinc coating uniformity
  • Zinc layer thickness (Z-coating µm)
  • Adherence to IS galvanized standards
  • Flaking, peeling, and surface defect checks

We also offer custom coatings like red oxide primer or epoxy layers when GI pipes are used in more aggressive conditions.

Hydrostatic Pressure & Quality Tests

Each pipe undergoes:

  • Hydrostatic pressure testing
  • Visual inspection
  • Dimensional accuracy checks
  • Straightness and weld-seam quality checks

All tests are calibrated with rejection criteria as per IS norms.

Audit-Ready Documentation

We provide:

  • EN 10204 3.1 MTCs
  • Zinc coating thickness reports
  • Hydro test logs
  • Galvanization QC reports
  • Heat number mapping for traceability

These documents ensure compliance for government, industrial, and contractor audits.

Logistics & Handling

GI pipes are supplied:

  • Clean and dry
  • PE-wrapped for moisture protection
  • With end caps on request
  • Handled using nylon slings for dent-free movement

We ensure safe loading, transport, and doorstep delivery to your site or warehouse.

Pipe Manufacturers

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FAQs — GI Pipes Suppliers | Madras Steels & Tubes

1. What types of GI pipes are supplied by Madras Steels & Tubes?

Madras Steels supplies a complete range of galvanized iron pipes including GI ERW pipes, GI HFIW pipes, and hot-dipped galvanized pipes designed for long-term corrosion resistance and outdoor durability.

2. What are the common applications of GI pipes?

GI pipes are widely used for drinking water supply lines, plumbing and sanitation systems, firefighting pipelines, HVAC structures, agricultural irrigation, fencing, and outdoor structural applications.

3. Why are GI pipes preferred over MS pipes for outdoor use?

GI pipes have a uniform zinc coating that provides higher resistance to corrosion, making them suitable for moisture-prone, humid, and outdoor environments compared to uncoated MS pipes.

4. What standards and grades do GI pipes from Madras Steels comply with?

GI pipes conform to IS 1239, IS 3589, IS 1161, IS 3601, IS 9295, and API 5L (on request), with custom grades and coatings available for specific project needs.

5. What surface finishes are available for GI pipes?

GI pipes are available in hot-dip galvanized, electro-galvanized, and GI-coated ERW finishes, with optional protective top coats such as red oxide primer, epoxy coating, or black enamel.

6. Are GI pipes supplied in customized sizes and lengths?

Yes, Madras Steels supplies GI pipes in OD × WT sizing, SRL (5–6 m) or DRL (10–12 m) lengths, along with cut-to-size options based on project requirements.

7. What quality checks are performed on GI pipes before dispatch?

Each GI pipe undergoes zinc coating thickness inspection, hydrostatic pressure testing, weld seam checks, dimensional accuracy checks, and surface defect inspections as per IS standards.

8. Are test certificates and compliance documents provided with GI pipes?

Yes, audit-ready documents such as EN 10204 3.1 MTCs, zinc coating thickness reports, hydro test logs, galvanization QC reports, and heat number traceability are provided.

9. Does Madras Steels supply GI pipes across India?

Yes, GI pipes are supplied through multiple branches located in Chennai, Mumbai, Delhi (NCR), Bangalore, Kolkata, Ahmedabad, and Hyderabad for fast and reliable delivery.

10. Why choose Madras Steels as a trusted GI pipe dealer in India?

With decades of experience since 1988, Madras Steels offers IS-compliant GI pipes from leading brands, ready stock, strict quality control, customized solutions, and dependable nationwide logistics

Last Updated On 21st Jan 2026