GI Pipes VS GP Pipes: Which one is the Best? A Detailed Comparison

GI Pipes VS GP Pipes: Which one is the Best? A Detailed Comparison - Blog
Difference Between GI and GP Pipes | Utkarsh India

In infrastructure, construction, and plumbing, the choice of piping material plays a key role in ensuring the strength, durability, and performance of any project. Among commonly used galvanised pipes, the two types are: Galvanised Iron Pipe (GI) and Galvanised Plain (GP). Both are used in the same field but have different significance.

This guide explores the difference between GI and GP, also acknowledging the reasons why GI pipes are more valuable and in demand for various projects.

Understanding the Difference Between GI and GP Pipes

In the basic structure of the piping system, the structural framework, drainage network, and plumbing system are pillars of any structure. Awareness of the basic difference between GI and GP helps the professionals make wise decisions.

  • Galvanised Iron Pipe: These are steel pipes coated with a thick layer of zinc after manufacturing. This coating layer offers robust protection against rust and corrosion.
  • Galvanized Plain Pipe: Made from mild steel sheet that is continuously galvanised, offering a smooth surface with thinning protection.

Both serve different purposes and uses, but GI pipes are the superior choice when it comes to durability and longevity.

Why GI Pipes Stand Out: Resistance and Longevity

One of the major key benefits of using galvanised iron pipe is how well it resists corrosion. The zinc coating offers more than just a coating; it also works as a sacrificial anode, ensuring the steel inside stays protected in any vulnerable environmental condition.

  • Long service life that lasts up to 50 years in a moderate environment
  • Reduces the maintenance cost as no such requirement for replacement
  • While exposure to water and moisture delivers a reliable quality

These features all make GI pipes a trusted solution for projects

Application of GI Pipes vs GP Pipes

GI Pipe Uses GP Pipe Uses
Water supply systems (residential, commercial, and industrial) Furniture making
Agricultural irrigation networks Automotive industry parts
Structural support in construction Electrical conduits
Fencing, scaffolding, and heavy-duty frameworks Lightweight fencing and non-structural projects


Cost Comparison: Short-Term Savings vs Long-Term Value

GI Pipes: Galvanised Iron pipes are higher in cost due to the metallic zinc coating layer done after manufacturing, which makes GI an unmatched product in terms of longevity and reliability. Additionally, it also reduced the lifetime expenses, as replacements and repairs are seldom needed.

GP Pipes: Initially, it is cheaper compared to GI pipes but limited in resistance to corrosion and inappropriate for high-moisture zones or long-term usability. Over time, maintenance and replacement may outweigh the initial savings.

Why Choose Utkarsh GI Pipes?

Utkarsh India Limited, as a trusted GI pipe supplier, uses high-quality raw material with an in-house galvanised coating process, ensuring a more precise, uniform zinc metal coating, which is superior for corrosion resistance.

With more than forty years of industrial experience, global recognition, and certifications like ISO 9001:2008, Utkarsh India Limited guarantees pipes that perform consistently with quality across water supply, irrigation, and heavy-duty infrastructure projects. As a reputed GI pipe supplier in India, Utkarsh India has a trusted network with engineers and suppliers backed by advanced technology and rigorous quality checks. Utkarsh India GI pipes are constantly in high demand by professionals like engineers and contractors across India. This recognition made them a perfect choice for projects that demand strength, safety, and long-term reliability.

Wrapping Up

While discussing both GI and GP pipes in this blog, it’s clear that GI pipes stand out as the best choice for construction, plumbing, and agriculture projects. GI's ability to withstand corrosion, deliver long service life, and reduce long-term cost makes it a smarter investment choice.

Utkarsh India Limited is the leading GI Pipes supplier in India, ensuring your project stands strong for decades.