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Water & utility pipelines form the circulatory system of every manufacturing facility, commercial complex, power plant, and infrastructure project.
These lines must handle:
For these reasons, the two most globally trusted standards are:
ASTM A53 (Gr A / Gr B)
For industrial water, compressed air, utility lines, and low-pressure service.
IS 3589 (Class A / Class B)
For water supply, firefighting, sewage, industrial water transmission, and large-bore pipelines across India and export markets.
1. Excellent Corrosion Resistance (With GI / 3LPE / Paint Coatings)
A53 + IS 3589 pipes can be coated with:
2. Pressure Stability for Water & Air Lines
3. Large Range of Diameters
4. Excellent Weldability & Installation Speed
Both materials are preferred by EPC contractors due to:
5. Suitable for Above-Ground & Underground Pipelines
Utility networks use:
A53 & IS 3589 suit all environments with correct coating.
🏭 Industrial Plants
🏢 Commercial Buildings
🏘 Municipal & Infrastructure
🔥 Power Plants
🛢 Refineries & Petrochemicals
This is why Inox Steel India supplies fully certified, coated, and traceable A53 & IS 3589 pipes for long-term performance.
We ensure:
| Material | Standard | Grades | Primary Duty |
|---|---|---|---|
| A53 Carbon Steel Pipe | ASTM A53 | Grade A / Grade B | Water lines, low-pressure utilities, air lines |
| IS 3589 Steel Pipe | IS 3589 | Class A / Class B | Water supply, sewage, structural & utility pipelines |
Black & Galvanized Carbon Steel Pipes
| Property | A53 Grade A | A53 Grade B |
|---|---|---|
| Type | Seamless / Welded | Seamless / Welded |
| Yield Strength | 205 MPa | 240 MPa |
| Tensile Strength | 330 MPa | 415 MPa |
| Weldability | Excellent | Excellent |
| Internal Pressure | Medium | Higher (Preferred for utilities) |
| Best Use | Water & air lines | Industrial utilities & pressure service |
Manufacturing Types:
(Inox Steel India supplies Seamless + High-quality ERW based on requirement.)
Indian Standard Pipes for Water Supply & Utility Lines
| Property | Class A | Class B |
|---|---|---|
| Thickness | Medium | Heavy |
| Pressure Rating | Medium | High |
| Welding | ERW / SAW | ERW / SAW |
| Tensile Strength | Min. 320 MPa | Min. 410 MPa |
| Applications | Water mains, sewage | High-pressure water, fire safety |
| Coatings | Bare / Painted / 3LPE / Fusion Bonded Epoxy | Same |
IS 3589 Types:
A53
IS 3589
A53
| Size Range | ½” – 20” |
| Schedules | SCH 20 / 40 / STD / XS / XXS |
| Types | Seamless / ERW / Galvanized |
IS 3589
| Size Range | 114.3 mm – 2540 mm |
| Wall Thickness | 4.8 mm – 20 mm |
| Types | ERW / SAW |
| Coatings | Painted, Black, GI, 3LPE, FBE |
A53 Grade B
IS 3589 Class B
A53
IS 3589
Water & utility pipelines in industrial and municipal systems require different materials depending on pressure, corrosion, coating, and flow rate.
Below is the engineering-grade selection map:
| Service | Recommended Standard |
|---|---|
| Cooling water (industrial) | IS 3589 Class B / A53 Gr B |
| Firefighting ring main | IS 3589 Class B (3LPE/FBE coating) |
| Sewer & drainage lines | IS 3589 Class A/B |
| Compressed air lines | A53 Grade B |
| Utility water supply | A53 / IS 3589 |
| HVAC chilled water | A53 Gr B (ERW) |
| City water distribution | IS 3589 SAW (large bore) |
| Irrigation systems | IS 3589 Class A/B |
| Raw water intake lines | IS 3589 + 3LPE |
| Rural water supply schemes | IS 3589 Class A/B |
| Fire water hydrant | IS 3589 Class B (heavy) |
A53 ERW / Seamless — Industrial Utility Lines
| NB | OD (mm) | SCH 40 WT | SCH 80 WT |
|---|---|---|---|
| 1” | 33.4 | 3.38 | 4.55 |
| 2” | 60.3 | 3.91 | 5.54 |
| 3” | 88.9 | 5.49 | 7.62 |
| 4” | 114.3 | 6.02 | 8.56 |
| 6” | 168.3 | 7.11 | 10.97 |
IS 3589 — Large Bore Water Lines
| OD (mm) | WT (mm) | Type |
|---|---|---|
| 114.3 | 4.8 – 8.0 | ERW |
| 168.3 | 5.0 – 10.0 | ERW |
| 219.1 | 6.0 – 12.0 | ERW/SAW |
| 355.6 | 6.3 – 16.0 | SAW |
| 508.0 | 6.3 – 18.0 | SAW |
| 914.4 | 8.0 – 20.0 | SAW |
| 1200 – 2540 | 10 – 20 | SAW |
A53 Grade B
Pmax (approx):
IS 3589 Class A / B
For firewater & cooling tower header lines, Class B is the industry standard.
✔ Black / Bare
✔ Red Oxide Painted
✔ GI (Hot Dip Galvanized)
✔ FBE (Fusion Bonded Epoxy)
✔ 3LPE / 3LPP Coating
A53 Carbon Steel
| Type | INR/kg | USD/kg |
|---|---|---|
| Seamless | ₹ 140 – 210 | $1.90 – $2.80 |
| ERW | ₹ 85 – 130 | $1.10 – $1.70 |
| GI Coated | ₹ 110 – 160 | $1.50 – $2.20 |
IS 3589
| Class | INR/kg | USD/kg |
|---|---|---|
| Class A (ERW/SAW) | ₹ 75 – 115 | $1.00 – $1.55 |
| Class B (Heavy) | ₹ 90 – 140 | $1.20 – $1.90 |
| 3LPE Coated | ₹ 130 – 180 | $1.80 – $2.60 |
Water & utility pipelines form the backbone of every industrial plant, commercial building, infrastructure project, and municipal water network.
These pipelines must withstand:
To meet these conditions, Inox Steel India supplies the two most reliable & widely accepted pipe standards:
✔ ASTM A53 (Gr A / Gr B)
For industrial water, utility lines, HVAC, compressed air, firefighting, DM water, and chilled water.
✔ IS 3589 (Class A / B)
For municipal water, cooling tower lines, fire hydrants, sewage, large-bore water distribution, and underground pipelines.
Both materials guarantee long-life, leak-free, low-maintenance utility networks.
Industrial Plants
Commercial Infrastructure
Municipal & Rural Water Supply
Refineries, Petrochemical & Power Plants
Inox Steel India supplies A53 & IS 3589 pipes across:
We maintain ready stock of:
This ensures same-day dispatch for urgent water line or firefighting jobs.
We export A53 & IS 3589 utility pipes for:
Export regions include:
UAE • Saudi Arabia • Oman • Qatar • Bahrain
Kenya • Egypt • Nigeria • South Africa
Malaysia • Indonesia • Singapore • Thailand
Italy • Spain • Netherlands • Poland • UK
USA • Canada • Mexico
All pipes shipped with full documentation, proper coating protection, and heat number traceability.
✔ For A53
✔ For IS 3589 (Large Bore)
✔ For GI Water Pipes
This ensures zero damage during sea freight and long-term corrosion protection.
We assist EPC, MEP, firefighting & waterworks contractors with:
Inox Steel India supplies:
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in, steel@inoxsteelindia.in
+91 9930796690
Yes — A53 Grade B is widely used for air lines in industries.
IS 3589 Class B with red oxide paint OR 3LPE coating.
Yes — up to 2540 mm OD in IS 3589 (SAW).
Yes — Hot Dip Galvanized A53 pipes are commonly used.
Yes — with certified coating tests.
Yes — full documentation + test certificates + coated pipes.
Inox Steel India supplies ASTM A53 and IS 3589 Class A/B pipes for water lines, cooling water, fire hydrant systems, compressed air, and utility pipelines. Available in GI, painted, FBE, and 3LPE coatings. Ready stock in Mumbai. Export-ready.