Weight is one of the most important technical parameters when selecting Mild Steel (MS) Pipes. Whether you are a civil engineer, contractor, or trader, the weight per meter decides both the cost and performance of the pipe.
In this 2025 guide, we provide:
- IS 1239 standard weight charts (Class A, B, C)
- Size-wise MS Pipe weights from 15 NB to 300 NB
- Brand-wise variations (Tata, Jindal, Gobindgarh factory pipes)
- Formula for calculating weight manually
- Buying tips & FAQs for engineers & buyers
Formula to Calculate MS Pipe Weight
Engineers often calculate MS pipe weight manually using the ISI formula:
Weight (Kg/m) = 0.02466 × (OD – Thickness) × Thickness × Length
- OD (mm): Outer Diameter
- Thickness (mm): Wall thickness
- Length (m): Standard length (1 meter or 6 meters)
Example: For 25 NB, OD = 33.7 mm, Thickness = 3.2 mm, Length = 1 m
Weight = 0.02466 × (33.7 – 3.2) × 3.2 × 1 = 2.35 Kg/m
MS Pipe Weight Chart – IS 1239 Standard (2025 Edition)
Here’s the complete size-wise weight chart:
Class A (Light Duty)
| NB Size | OD (mm) | Thickness (mm) | Weight (Kg/m) |
|---|---|---|---|
| 15 NB | 21.3 | 2.0 | 0.98 |
| 20 NB | 26.9 | 2.3 | 1.36 |
| 25 NB | 33.7 | 2.6 | 1.88 |
| 40 NB | 48.3 | 2.9 | 3.00 |
| 50 NB | 60.3 | 3.2 | 4.20 |
| 65 NB | 76.1 | 3.2 | 5.60 |
| 80 NB | 88.9 | 3.2 | 6.60 |
| 100 NB | 114.3 | 4.0 | 9.80 |
| 150 NB | 168.3 | 4.0 | 15.00 |
| 200 NB | 219.1 | 4.5 | 22.50 |
| 300 NB | 323.9 | 4.8 | 34.00 |
These price only for reference
Class B (Medium Duty)
| NB Size | OD (mm) | Thickness (mm) | Weight (Kg/m) |
|---|---|---|---|
| 15 NB | 21.3 | 2.6 | 1.26 |
| 20 NB | 26.9 | 2.9 | 1.73 |
| 25 NB | 33.7 | 3.2 | 2.35 |
| 40 NB | 48.3 | 3.2 | 3.58 |
| 50 NB | 60.3 | 3.6 | 4.83 |
| 65 NB | 76.1 | 3.6 | 6.10 |
| 80 NB | 88.9 | 4.0 | 8.00 |
| 100 NB | 114.3 | 4.5 | 11.25 |
| 150 NB | 168.3 | 4.5 | 17.40 |
| 200 NB | 219.1 | 5.0 | 25.00 |
| 300 NB | 323.9 | 5.4 | 38.00 |
These price only for reference
Class C (Heavy Duty)
| NB Size | OD (mm) | Thickness (mm) | Weight (Kg/m) |
|---|---|---|---|
| 15 NB | 21.3 | 3.2 | 1.57 |
| 20 NB | 26.9 | 3.2 | 2.06 |
| 25 NB | 33.7 | 3.6 | 2.85 |
| 40 NB | 48.3 | 3.8 | 4.01 |
| 50 NB | 60.3 | 4.5 | 5.44 |
| 65 NB | 76.1 | 4.5 | 7.20 |
| 80 NB | 88.9 | 4.5 | 8.80 |
| 100 NB | 114.3 | 5.4 | 12.64 |
| 150 NB | 168.3 | 5.4 | 19.64 |
| 200 NB | 219.1 | 6.0 | 27.50 |
| 300 NB | 323.9 | 6.4 | 41.00 |
These price only for reference
Brand-Wise MS Pipe Weight Reference
Tata MS Pipes
- Known for consistency, premium quality.
- Weights closely match IS 1239 standards.
Jindal MS Pipes
- Widely available across India.
- Slightly heavier than ISI chart (extra safety margin).
Mandi Gobindgarh Factory Pipes
- Cheapest in India.
- Slight deviations in weight, but competitive prices.
Applications of MS Pipe Weight Charts
- Cost Estimation – Price per meter is directly linked to weight.
- Structural Engineering – Ensures load-bearing safety.
- Project BOQ Preparation – Contractors calculate total tonnage.
- Comparison – Helps buyers pick Class A, B, or C.
Buying Tips for Traders & Engineers
- Always cross-check supplier weights with IS 1239 chart.
- For water supply, Class B is standard.
- For firefighting, Class C is recommended.
- For furniture & light fabrication, Class A suffices.
- Buy from ISI-certified mills like Tata or Jindal to avoid underweight pipes.
FAQs (2025 Edition)
Q1. What is the weight of 1-inch MS pipe per meter?
→ Around 2.35 Kg (Class B).
Q2. How to calculate MS pipe weight manually?
→ Use formula: 0.02466 × (OD – Thickness) × Thickness × Length.
Q3. What is the weight of 2-inch MS pipe?
→ Around 5.44 Kg/m (Class C).
Q4. Which class pipe is heaviest?
→ Class C (Heavy Duty).
Q5. What is the HSN Code for MS pipes?
→ 7306 (18% GST).
Q6. What is the length of a standard MS pipe?
→ 6 meters (20 feet).
Q7. Which brand pipes are heaviest?
→ Jindal pipes often slightly exceed IS 1239 chart.
Q8. Which is cheaper – Tata or Gobindgarh pipes?
→ Gobindgarh factory pipes are cheapest.
Q9. Are seamless pipes heavier than ERW?
→ Yes, seamless pipes are thicker & stronger.
Q10. Can I download the full MS Pipe weight chart?
→ Yes, PDF download link provided above.
Conclusion
The MS Pipe Weight Chart in Kg/Meter (2025 Edition) is the ultimate reference for engineers, traders, and buyers. By following IS 1239 standards, you ensure accurate BOQs, correct price calculations, and safe project execution.
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