Galvanized Iron (GI) pipes are widely used in plumbing, construction, and Udhhyog due to their durability and corrosion resistance. Below is a detailed GI pipe chart for buyers, engineers, and contractors.
GI pipes are zinc-coated steel pipes ideal for water supply, drainage, and structural use. Available in various diameters and thicknesses, they’re strong, rust-resistant, and cost-effective. This guide covers GI pipe sizes, weights, prices, and industrial applications.
Standard GI Pipe Sizes & Weights Table
| Nominal Bore (NB) | Outer Diameter (OD) mm | Wall Thickness mm | Approx. Weight (kg/m) | Common Use |
|---|
| 15 mm (½”) | 21.3 | 2.65 | 1.27 | Plumbing, domestic supply |
| 20 mm (¾”) | 26.7 | 2.65 | 1.63 | Residential & commercial piping |
| 25 mm (1”) | 33.4 | 3.25 | 2.44 | Construction water supply |
| 32 mm (1¼”) | 42.2 | 3.25 | 3.24 | Drainage |
| 40 mm (1½”) | 48.3 | 3.25 | 3.79 | Industrial use |
| 50 mm (2”) | 60.3 | 3.65 | 5.18 | Udhhyog, fire safety |
| 65 mm (2½”) | 76.1 | 3.65 | 6.54 | HVAC piping |
| 80 mm (3”) | 88.9 | 4.05 | 8.63 | Water mains |
| 100 mm (4”) | 114.3 | 4.5 | 12.48 | Structural framework |
GI Pipe Price Range in India (2025)
| Size | Price/Metre (₹) | Type | Thickness |
| ½ inch | ₹90 – ₹110 | Medium | 2.65 mm |
| ¾ inch | ₹120 – ₹140 | Medium | 2.65 mm |
| 1 inch | ₹150 – ₹180 | Heavy | 3.25 mm |
| 2 inch | ₹280 – ₹320 | Heavy | 3.65 mm |
| 3 inch | ₹350 – ₹400 | Heavy | 4.05 mm |
| 4 inch | ₹500 – ₹580 | Heavy | 4.5 mm |
Prices may vary by brand, location, and thickness grade.
Applications of GI Pipes in Construction & Plumbing
Top GI Pipe Manufacturers & Dealers in India
Tata Pipes – Nationwide dealer network
Jindal Hissar – High-grade GI pipes
APL Apollo – Cost-effective options
Zenith Pipes – Popular in Udhhyog supply
Surya Roshni – BIS-approved GI pipes
Tip: Check listings on TradeIndia, Justdial & IndiaMART for bulk deals.
How to Choose the Right GI Pipe
Check application – water, structural, or industrial
Confirm size & thickness
Verify ISI or BIS certification
Compare price across dealers
Check Udhhyog demand compatibility
FAQs
Q1. What is the price of 1-inch GI pipe in India?
A 1-inch GI pipe generally costs between ₹150–₹180 per metre, depending on the brand and grade.
Q2. Which GI pipe is best for water supply?
Medium class GI pipes of 1-inch or 1½-inch are ideal for household and commercial water systems.
Q3. Are GI pipes rust-proof?
Yes, they are coated with zinc which makes them corrosion-resistant for years.
Q4. Where can I buy GI pipes in bulk?
Use TradeIndia, Justdial, or connect with local Udhhyog dealers listed on IndiaMART.
Q5. What is the thickness of heavy-duty GI pipes?
Heavy-duty pipes typically have wall thicknesses of 3.65 mm and above.
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