INOX STEEL INDIA is a trusted and globally recognized manufacturer, stockist, and exporter of ERW (Electric Resistance Welded) Tubes supplying to UAE, Saudi Arabia, Qatar, Oman, Kuwait, Africa, Europe, and North–South America.
With advanced HF–ERW mills, in-line NDT testing, and precise forming technology, we deliver ERW tubes engineered for low/medium pressure service, structural fabrication, automotive engineering, and industrial applications.
Our ERW Tubes are manufactured from prime HR/CR coils sourced from reputed mills and processed through high-frequency welding technology to produce consistent, defect-free, and dimensionally accurate tubes.
Whether you require round, square, or rectangular ERW tubes in MS/CS or stainless steel grades, INOX STEEL INDIA provides world-class quality backed by 3.1/3.2 certification and strong global export capabilities.
ERW (Electric Resistance Welded) Tubes are welded pipes produced by passing high-frequency electrical current through the edges of steel strip, heating the material, and forging the joint without filler metal.
This creates a strong, uniform weld that is metallurgically equivalent to the base metal.
1. Slitting & Coil Preparation
Prime HR/CR coils are slit into exact strip widths as per tube size.
2. Forming the Tube Shape
Rollers gradually form the strip into a round or pre-shaped hollow.
3. High-Frequency Induction Welding (HFI / HF-ERW)
Edges of the formed strip are heated by electrical resistance and forged together under pressure.
✔ No filler metal
✔ No arc
✔ Strong, consistent weld seam
4. Bead Removal (Internal/External)
Weld bead is removed to maintain smooth flow and high finishing.
5. Sizing & Calibration
The tube passes through sizing mills to achieve exact OD, WT & shape tolerances.
6. Non-Destructive Testing (NDT)
Inline eddy current or ultrasonic testing detects any weld or surface inconsistencies.
7. Cutting, Straightening & Finishing
Tubes are cut into 3m / 6m / 12m lengths and straightened.
8. GI Coating / Polishing / Pickling (If Required)
Black ERW
GI coated (IS 1239 Part 1)
P&O pickled
Polished SS A554 mirror finish
This ensures perfect weld integrity, consistent wall thickness, superior finishing, and reliable service life.
| Application | Usage | Preferred Grades |
| Structural Fabrication | Trusses, frames, buildings | IS 1161, EN 10219 |
| PEB | Rafters, columns, purlins | EN 10219 S355J2 |
| Solar Structures | Mounting & cross-members | IS 1161 / EN 10219 |
| Scaffolding | Support & walkways | IS 1239 / IS 1161 |
| Furniture & Racks | Office & display racks | Cold-formed ERW |
| Water Lines | Plumbing & sprinkler | IS 1239 Part 1 |
| OD (mm) | Wall Thickness (mm) | Approx Weight (kg/m) |
| 12.7 – 21.3 | 0.8 – 2.0 | 0.30 – 0.75 |
| 25.4 – 33.7 | 1.0 – 3.2 | 0.90 – 2.20 |
| 38.1 – 60.3 | 1.2 – 4.0 | 1.25 – 6.50 |
| 73.0 – 114.3 | 2.0 – 6.0 | 4.50 – 14.90 |
| 141.3 – 168.3 | 3.0 – 8.0 | 10.50 – 28.40 |
| 193.7 – 219.1 | 3.2 – 10.0 | 15.20 – 43.30 |
| 273.1 – 323.9 | 4.0 – 12.0 | 28.00 – 84.20 |
| 355 – 610 | 5.0 – 12.5 | 40.00 – 150.00 |
| Material | Price (INR/kg) | Price (USD/kg) |
| MS ERW (IS 1239) | ₹ 62 – ₹ 78 | $ 0.90 – $ 1.20 |
| Structural ERW | ₹ 68 – ₹ 95 | $ 1.00 – $ 1.35 |
| GI ERW | ₹ 85 – ₹ 120 | $ 1.25 – $ 1.70 |
| SS 304 ERW | ₹ 310 – ₹ 380 | $ 3.80 – $ 4.60 |
| SS 316 ERW | ₹ 380 – ₹ 480 | $ 4.60 – $ 5.80 |
Q1. What is an ERW Tube?
ERW tube is manufactured by high-frequency welding of steel strip edges.
Q2. What is ERW pipe used for?
Structural, fabrication, water lines, furniture, scaffolding, and automotive.
Q3. Do you export ERW tubes?
Yes — worldwide.