A Class MS Pipe Thickness – Sizes, Chart & Usage Guide
A Class MS Pipe Thickness – Sizes, Chart & Usage Guide
A Class MS Pipes are lightweight mild steel pipes used in low-pressure applications like plumbing, HVAC, and protective casing. Udhhyog brings you the complete chart, sizes, applications, and comparison with B & C Class pipes.
What is A Class MS Pipe?
A Class MS Pipe refers to the lightest wall thickness grade of mild steel pipes defined under IS 1239 Part 1 standards. These pipes are suitable where pressure conditions are minimal, and cost-effectiveness is a priority.
A Class MS Pipe Thickness Chart (in mm)
| Nominal Bore (NB) | Outer Diameter (OD) | Wall Thickness (mm) |
|---|---|---|
| 15 mm (1/2") | 21.3 mm | 2.0 mm |
| 20 mm (3/4") | 26.9 mm | 2.0 mm |
| 25 mm (1") | 33.7 mm | 2.6 mm |
| 32 mm (1 1/4") | 42.4 mm | 2.6 mm |
| 40 mm (1 1/2") | 48.3 mm | 2.6 mm |
| 50 mm (2") | 60.3 mm | 2.9 mm |
| 65 mm (2 1/2") | 76.1 mm | 2.9 mm |
| 80 mm (3") | 88.9 mm | 3.2 mm |
| 100 mm (4") | 114.3 mm | 3.6 mm |
Where is A Class MS Pipe Used?
- Low-pressure plumbing
- Protective electrical conduit
- HVAC return ducts
- Temporary framework
- General casing and enclosure purposes
A vs B vs C Class MS Pipe Comparison
| Class | Wall Thickness | Weight | Common Use |
|---|---|---|---|
| A Class | Thin | Light | Low-pressure, light-duty |
| B Class | Medium | Moderate | Fabrication, scaffolding |
| C Class | Thick | Heavy | Heavy-duty pipelines |
Estimated Price of A Class MS Pipe (2025)
- ½" – ₹50 to ₹65 per meter
- 1" – ₹75 to ₹95 per meter
- 2" – ₹135 to ₹160 per meter
- 4" – ₹240 to ₹280 per meter
Note: Pricing depends on length, coating (bare, painted), and delivery location.
Why Udhhyog for A Class MS Pipes?
- ISI marked pipes as per IS 1239
- Credit facility up to ₹50 lakhs
- Fast dispatch and PAN India service
- Multiple finish options available
FAQs – A Class MS Pipe
Q. Is A Class pipe suitable for plumbing?
A: Yes, in low-pressure housing and irrigation systems.
Q. What standard defines A Class MS Pipes?
A: IS 1239 (Part 1) covers dimensions and tolerances for A Class pipes.
Q. What is the wall thickness of A Class pipe?
A: Typically ranges from 2.0 mm to 3.6 mm depending on NB size.
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