Home› Charts› GI Pipe Weight Chart
🟢 Galvanized Iron

GI Pipe Weight Chart

Complete galvanized iron (GI) pipe weight chart for all nominal bore sizes as per IS:1239 Part 1. Covers Light (L), Medium (M), and Heavy (H) class pipes with kg/m, 6m, and 12m weights.

IS:1239
Part 1 Standard
3 Classes
Light · Medium · Heavy
7800
GI Pipe Density (kg/m³)
½″–6″
Nominal Bore Range

📥 GI Pipe Weight Chart PDF

Professional reference chart. All classes. Print-ready for site use.

ℹ️ Formula: Weight (kg/m) = (OD – t) × t × 0.02466  |  Density: 7800 kg/m³ (zinc coating accounted)  |  Add ~2% for actual galvanized weight on site.
Class Guide: L — Light Low-pressure water supply, light duty M — Medium General plumbing, standard applications H — Heavy High-pressure, industrial applications
Nominal Bore OD (mm) Class Thickness (mm) kg/m 6m Pipe (kg) 12m Pipe (kg) kg/ft lbs/ft
IS:1239 Part 1 standard. Values for reference only. Actual weights may vary ±2–3%. © PipeWeightCalculator.com

GI vs MS Pipe Weight Comparison

How zinc galvanizing affects pipe weight for the same nominal size:

NB SizeOD (mm)T (mm)MS kg/mGI kg/mDifference% Heavier (GI)

Note: GI uses density 7800 kg/m³ vs 7850 for MS. In practice, actual GI pipes may be 2–3% heavier due to zinc coating thickness.

About GI Pipe Weight Chart

Galvanized iron (GI) pipes are mild steel pipes that have been hot-dip galvanized — coated with a layer of zinc — to prevent corrosion and extend service life. They are the most widely used pipes in India for water supply, plumbing, and irrigation systems.

This GI pipe weight chart covers all nominal bore (NB) sizes from ½ inch to 6 inch for Light, Medium, and Heavy classes as specified in IS:1239 Part 1. The weight values are calculated using the standard pipe weight formula with a density of 7800 kg/m³ for galvanized steel.

How to Use This Chart

1️⃣

Find Your Size

Locate the nominal bore size (½″ to 6″) in the first column of the chart.

2️⃣

Select the Class

Choose Light, Medium, or Heavy class based on your application requirement.

3️⃣

Read the Weight

The kg/m column gives weight per meter. Multiply by your pipe length for total weight.

4️⃣

Calculate Total

Multiply total weight per pipe by quantity for your complete material estimate.

GI Pipe Weight Chart — FAQs

What is the weight of ½ inch GI pipe per meter?▼
A ½ inch GI pipe (OD = 15mm) weighs: Light class (2.0mm) = 0.64 kg/m, Medium class (2.65mm) = 0.81 kg/m, Heavy class (3.25mm) = 0.96 kg/m. Standard 6m length: 3.84 to 5.76 kg.
What is the weight of 1 inch GI pipe per meter?▼
A 1 inch GI pipe (OD = 25mm) weighs: Light class (2.5mm) = 1.39 kg/m, Medium class (3.25mm) = 1.77 kg/m, Heavy class (4.05mm) = 2.14 kg/m. For a standard 6m pipe, total weight ranges from 8.34 to 12.84 kg.
What is the weight of 2 inch GI pipe per meter?▼
A 2 inch GI pipe (OD = 50mm) weighs: Light class (3.0mm) = 3.56 kg/m, Medium class (3.65mm) = 4.28 kg/m, Heavy class (4.5mm) = 5.20 kg/m. 6m pipe: 21.4 to 31.2 kg.
Which GI pipe class should I use for home plumbing?▼
Medium class (M) is standard for domestic water supply. Light class is used for low-pressure or protected installations. Heavy class is required for high-pressure mains, industrial applications, or where extra corrosion resistance is needed.
Is GI pipe heavier or lighter than MS pipe?▼
GI pipe is very slightly lighter by formula (density 7800 vs 7850 kg/m³). However, the zinc coating in practice adds ~2–3% to actual weight. So real-world GI pipe is approximately equal to or slightly heavier than equivalent MS pipe.

🔗 Related Resources

🟢 GI Pipe Calculator 🔵 MS Pipe Chart 🟦 Square Pipe Chart 📐 Weight Formulas 📊 All Charts