GI Pipe Weight Calculator | Galvanized Iron Pipe Weight Per Meter

🟢 GI pipes use density 7800 kg/m³ (slightly lower than MS due to zinc coating). Formula identical to MS pipe with adjusted constant.

Outer Diameter (mm)

Width (mm)

Height (mm)

Wall Thickness (mm)

Length (m)

Quantity (nos)

Standard GI Pipe Sizes (IS:1239)

📊 GI Pipe Weight Results

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Weight / Meter

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Weight / Foot

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Single Pipe

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Total Weight

⚠️ GI pipe weight includes zinc coating (~2-3% heavier than bare MS). Values are approximate reference figures.

GI Pipe Weight Formula

GI Round Pipe — Standard Formula

Weight (kg/m) = (OD – t) × t × 0.02466

GI pipes use same formula as MS pipes. Zinc coating adds ~2-3% to total weight in practice.
OD = Outer diameter (mm), t = Wall thickness (mm)

Worked Example

For a 1″ (25mm OD × 2.5mm thick) GI pipe:

Weight = (25 – 2.5) × 2.5 × 0.02466 = 22.5 × 2.5 × 0.02466 ≈ 1.39 kg/m

For a 6m pipe: 1.39 × 6 = 8.34 kg

GI Pipe Weight Chart (IS:1239)

Standard galvanized iron pipe weights per IS:1239 Part 1 specification.

What is GI Pipe?

GI (Galvanized Iron) pipe is a steel pipe coated with a layer of zinc to prevent corrosion and rust. The galvanization process significantly extends the life of the pipe, making it ideal for water supply, plumbing, and outdoor applications.

GI pipes are manufactured as per IS:1239 (Light, Medium, and Heavy class) and are available in sizes ranging from ½ inch to 6 inches nominal bore. The zinc coating adds approximately 2–3% to the total weight compared to bare MS pipes.

GI Pipe Classes

Class	Color Code	Min. Thickness	Application
Light (L)	Yellow	2.0 mm	Low-pressure water supply
Medium (M)	Blue	2.5 mm	Standard plumbing, general use
Heavy (H)	Red	3.2 mm	High-pressure, industrial

GI Pipe Weight — FAQs

What is the weight of 1 inch GI pipe per meter?▼

A standard 1 inch (25mm OD) GI pipe (Medium class) with 2.5mm wall thickness weighs approximately 1.39 kg/m. For a standard 6m length, this equals about 8.34 kg per pipe.

Is GI pipe heavier than MS pipe?▼

GI pipe is slightly heavier than equivalent MS pipe due to the zinc galvanizing coating. The difference is approximately 2-3% in total weight. For most practical calculations, the same formula is used.

What sizes does GI pipe come in?▼

GI pipes in India are available per IS:1239 in nominal bore sizes: ½″, ¾″, 1″, 1¼″, 1½″, 2″, 2½″, 3″, 4″, 5″, and 6″. Each size has Light, Medium, and Heavy class variants.

How do I calculate the weight of GI pipe in kg?▼

Use the formula: Weight (kg/m) = (OD – t) × t × 0.02466. Multiply by length in meters to get total weight. Our calculator does this instantly — just enter OD, thickness, and length.

🔗 Related Resources

📌 GI Pipe Quick Weights

½″ (15mm×2mm)0.64 kg/m

1″ (25mm×2.5mm)1.39 kg/m

1½″ (40mm×3mm)2.79 kg/m

2″ (50mm×3mm)3.56 kg/m

3″ (80mm×3.25mm)6.19 kg/m

📐 GI Pipe Formula

Weight = (OD − t) × t × 0.02466
unit: kg/m

Full Guide →

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