Galvanized Iron (GI) pipes are widely used in construction, plumbing, and various Udhhyog applications due to their corrosion resistance, durability, and strength. They are available in multiple sizes, wall thicknesses, and specifications for efficient pipeline distribution.
GI pipes are durable and corrosion-resistant, making them ideal for construction and plumbing. Use the detailed GI pipe chart below to understand sizes, weights, and prices. Trusted by contractors and Udhhyog sectors for structural and fluid applications.
GI Pipe Sizes & Weight Chart (ISI Medium Class)
| Nominal Bore (NB) | Outer Diameter (mm) | Wall Thickness (mm) | Weight (kg/m) | Approx. Price (INR/m) |
|---|
| 15 mm (1/2") | 21.3 | 2.65 | 1.26 | ₹80 – ₹110 |
| 20 mm (3/4") | 26.9 | 2.65 | 1.61 | ₹95 – ₹130 |
| 25 mm (1") | 33.7 | 3.25 | 2.44 | ₹125 – ₹160 |
| 32 mm (1¼") | 42.4 | 3.25 | 3.24 | ₹165 – ₹200 |
| 40 mm (1½") | 48.3 | 3.25 | 3.83 | ₹190 – ₹230 |
| 50 mm (2") | 60.3 | 3.65 | 5.15 | ₹250 – ₹300 |
| 65 mm (2½") | 76.1 | 3.65 | 6.61 | ₹310 – ₹370 |
| 80 mm (3") | 88.9 | 4.05 | 8.63 | ₹390 – ₹450 |
| 100 mm (4") | 114.3 | 4.50 | 12.40 | ₹500 – ₹600 |
Note: Prices vary based on location, brand, coating thickness, and dealer margins.
Types of GI Pipes Available
Class A (Light): Suitable for low-pressure water supply.
Class B (Medium): Common in general construction and residential plumbing.
Class C (Heavy): Preferred in Udhhyog plants, heavy-duty structural and fire protection systems.
Common GI Pipe Applications
Water distribution & drainage
Plumbing lines in homes
Structural support in buildings
Udhhyog-based fabrication & fencing
Greenhouse structures
How to Choose the Right GI Pipe
Diameter & Pressure Rating: Based on water flow requirement.
Wall Thickness: Thicker walls for industrial & heavy-duty use.
Galvanization Quality: Ensures corrosion resistance.
ISI Certification: Assures safety & durability.
FAQs
Q1. What is the standard length of a GI pipe?
A: Standard length is 6 meters, but custom cuts are available on request.
Q2. How long do GI pipes last?
A: Typically 20-25 years depending on water quality and coating thickness.
Q3. Are GI pipes good for underground piping?
A: Yes, but with proper anti-corrosion coating for long-term use.
Q4. Can GI pipes be used in chemical industries?
A: Generally not recommended unless lined; stainless steel is better for chemicals.
Q5. Where to buy reliable GI pipes in India?
A: Trusted platforms include TradeIndia, Justdial, IndiaMART, and verified Udhhyog suppliers.
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