GI Pipe
GI Pipe
GI pipe is a mild-steel pipe that has been hot-dip galvanized — immersed in molten zinc so a protective layer bonds to the steel surface. The zinc coating protects the pipe from rust, making it suitable for outdoor and moisture-exposed applications.
What Makes a Pipe "GI"?
A GI pipe starts as an ordinary mild-steel (MS) pipe and is then hot-dip galvanized to IS 4736 : 1986 (Amendment No. 1, 1989), with a minimum zinc coating of 360 g/m² (approx. 51 micron), applied to plain-end or screwed-and-socketed steel tubes.
Common Applications of GI Pipe
- Fencing, gates and outdoor railings
- Construction scaffolding
- Outdoor structural work exposed to regular moisture
Sizes and Specifications
| Standard | Coverage | Details |
|---|---|---|
| IS 1239 (Part 1) : 2004 | GI pipe for water, air, steam and non-hazardous gas lines | 15NB to 150NB, Light/Medium/Heavy classes |
| IS 4736 : 1986 (Amd. 1, 1989) | Zinc coating on steel tubes | Min. 360 g/m² (approx. 51 micron), plain or screwed-and-socketed ends |
Standard length: 6 metres, plain or threaded ends. Custom lengths available on request.
Understanding GI Pipe Rates
GI pipe pricing isn’t driven by steel cost alone — zinc prices move independently and can have just as much impact. Diameter, wall thickness, coating class and order quantity also factor in, so rates can shift more often than expected.
Need GI Pipe for a Project?
Tell us your required sizes, quantities and delivery location, and Jindal Supreme India Ltd. will get back to you with current pricing and stock availability.
Looking for other steel products? See our MS Pipe range for structural framing, GI Poles for power line applications, or Crash Barriers for highway safety. For custom orders, contact our team.
Frequently Asked Questions
What's the difference between GI pipe and MS pipe?
What's the zinc coating on Jindal GI pipe?
What sizes are available?
Can you weld a GI pipe?
Need GI Pipe for a Project?
Share your sizes, quantities and delivery location — we will get back with pricing and stock availability.