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Inox Steel India is a leading manufacturer, stockist, and global exporter of Stainless Steel Heat Exchanger Tubes made as per EN 10216-5 in the premium grade X2CrNi18-10 (Werkstoff 1.4307) — equivalent to SS 304L (UNS S30403).
With high corrosion resistance, excellent formability, and enhanced weldability due to low carbon content, this grade is widely used in heat exchangers, condensers, refinery coolers, boilers, chemical evaporators, and thermal processing systems.
We supply tubes in a wide range of OD, wall thickness, and delivery conditions (Annealed, Cold Finished, Bright Annealed), with full EN 10204 3.1 / 3.2 certifications.
Our tubes are engineered to perform reliably in steam service, mild corrosive media, heat transfer systems, and moderate chloride environments, making them ideal for oil & gas, power plants, petrochemical units, and industrial heat-exchange systems.
Our manufacturing facilities are equipped with advanced cold-drawn lines, bright annealing furnaces, U-bending systems, and automated NDT equipment, ensuring consistency, dimensional accuracy, and long service life of every heat exchanger tube supplied.
X2CrNi18-10 is the EN designation for low-carbon austenitic stainless steel 304L.
It contains:
This composition significantly improves resistance to:
The grade is preferred for heat exchanger tubes, because it offers a reliable balance of corrosion resistance, mechanical stability, weldability, and cost efficiency.
Excellent Corrosion Resistance
Superior Weldability
Low carbon (≤0.03%) avoids carbide precipitation, making it ideal for U-bending, automatic welding, orbital welding, and fabrication of tube sheets.
High Temperature Stability
Smooth Bore for Efficient Heat Transfer
Cold-drawn & bright annealed tube ensures faster heat exchange, lower fouling, and longer service life.
1. Solid Billet → Hollow Shell (Hot Piercing)
High-quality stainless steel billets are pierced using rotary or hydraulic piercing machines.
2. Cold Drawing / Cold Rolling
3. Bright Annealing
4. Straightening & Finishing
Straightness tolerance maintained within ≤ 1 mm per meter.
5. U-Bending (For Heat Exchangers)
Computer-controlled U-bending ensures smooth radius, zero wrinkling, and no wall thinning.
6. Final Inspection & NDT Testing
| Application | Service Media | Temperature Range | Industry |
| Shell & Tube Heat Exchangers | Steam, water, glycol | Up to 600°C | Petrochemical, Food Processing |
| U-Tube Heat Exchangers | Steam condensate | High cyclic | Refinery, Chemical |
| Condenser Tubes | Cooling water, mild saline | 5°C – 120°C | Power, Fertilizer |
| Boiler Tubes | Steam, hot water | 100°C – 350°C | HVAC, Industrial Boilers |
| Evaporator Tubes | Distilled water, organic fluids | 50°C – 150°C | Chemical, Pharma |
| OD (mm) | Wall (mm) | Approx. Weight (kg/m) |
| 12.7 | 1.24 | 0.37 |
| 15.88 | 1.65 | 0.59 |
| 19.05 | 1.65 | 0.71 |
| 25.4 | 2.11 | 1.28 |
| 31.8 | 2.11 | 1.61 |
| 38.1 | 2.64 | 2.26 |
| 50.8 | 2.77 | 3.68 |
| 63.5 | 3.05 | 5.48 |
| 76.2 | 3.38 | 7.48 |
| OD Range | Price INR/kg (FOB Mumbai) | USD/kg (FOB India) | Application |
| 6–38 mm | ₹ 285 – ₹ 350 | $3.55 – $4.35 | Heat exchangers, evaporators |
| 38–76 mm | ₹ 300 – ₹ 380 | $3.75 – $4.70 | Condenser tubes |
| 76–114 mm | ₹ 310 – ₹ 400 | $3.90 – $4.90 | Boiler & cooler tubes |
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Yes, it is one of the most widely used materials for heat exchangers, condensers, coolers, and boilers. Safe for low-chloride environments (up to ~200 ppm). Yes — with stress-relief heat treatment after bending. HSN code is 7304.41.00. Yes — BA tubes are available for pharma, medical & food industry heat exchangers. Yes, we export regularly to UAE, Saudi Arabia, Oman, Qatar, Germany, Italy, Poland. Is X2CrNi18-10 suitable for heat exchangers?
What is the chloride resistance of 1.4307 tubes?
For higher chlorides → 316L or Duplex is recommended. Do you manufacture U-bend heat exchanger tubes?
What is the HSN code for stainless steel heat exchanger tubes?
Do you supply tubes with BA (Bright Annealed) finish?
Can you export to Europe and Middle East?