Hi-Tech Pipes

Galvanized Iron (GI) Pipes are steel pipes coated with a layer of zinc to protect them from rust and corrosion. At Hi-Tech Pipes Limited , we manufacture GI pipes using a state-of-the-art hot-dip galvanizing process , ensuring strength, safety, and long service life for every pipe we produce. 1️⃣ Raw Material Selection The process begins with high-quality mild steel (MS) coils or strips . These are carefully inspected for surface finish, thickness, and mechanical properties to ensure they meet IS:1239 and IS:3589 standards . 2️⃣ Pipe Forming (ERW Process) The steel coil is slit into strips and fed into a tube-forming mill , where it is shaped into a circular tube . The edges are welded together using the Electric Resistance Welding (ERW) method, forming a strong and continuous seam. The welded joint is then heat-treated to restore uniform strength throughout the pipe. 3️⃣ Surface Cleaning & Preparation Before galvanizing, the pipes undergo a series of cleaning processes: ...

  Difference Between GI and GP Pipes Both GI (Galvanized Iron) and GP (Galvanized Plain) pipes are steel pipes coated with zinc to protect them from rust and corrosion — but they differ in the process of galvanization, surface finish, and applications . 1. Manufacturing Process GI Pipes (Galvanized Iron): Made by hot-dip galvanization . The steel pipe is dipped into molten zinc, forming a thick and uniform zinc coating on both the inside and outside surface. GP Pipes (Galvanized Plain): Made by electro-galvanization . A thin layer of zinc is electroplated onto the surface of cold-rolled steel sheets before being formed into pipes. This process gives a smooth and shiny finish , but the coating is thinner than hot-dip GI. 2. Coating Thickness & Protection GI Pipes: Have a thicker zinc coating (≈40–120 microns) , offering stronger protection against rust and suitable for outdoor and underground use . GP Pipes: Have a thinner zinc coating (≈5–20 microns) , ...

In the world of plumbing, construction, and agriculture, GI Pipes (Galvanized Iron Pipes) are among the most widely used steel products. Known for their strength, corrosion resistance, and versatility , these pipes are essential for carrying water, gas, and other fluids — especially in outdoor and industrial environments. What Is a GI Pipe? GI Pipe stands for Galvanized Iron Pipe . It is a type of steel pipe that has been coated with a layer of zinc through a process called galvanization . This zinc coating acts as a protective barrier, preventing the steel from rusting or corroding when exposed to moisture, air, or chemicals. As a result, GI pipes last longer than regular mild steel pipes, especially in outdoor or humid environments. How Are GI Pipes Manufactured? GI Pipes are usually made through the ERW (Electric Resistance Welding) process followed by galvanization . Here’s how it works: Steel Preparation – Mild steel coils are slit into strips. Pipe Forming – The...