What Are Stainless Steel Heat Exchanger Tubes?
A stainless steel heat exchanger tube is a precision tube mounted inside a shell or coil that carries one fluid while a second fluid flows around it, allowing heat to transfer between the two without the fluids mixing. Because heat exchanger tubes see cyclic thermal stress, high pressure and often corrosive process media, they demand tighter dimensional tolerance, better surface finish and stronger NDT/documentation than general-purpose pipe. Stainless steel particularly 304/304L and 316/316L is specified for its combination of corrosion resistance, high-temperature strength and hygienic, easy-to-clean surface finish.
Stainless Steel Heat Exchanger Tube Manufacturer in India
Amardeep Steel is a leading stainless steel heat exchanger tube manufacturer in India, part of our wider Stainless Steel Pipes & Tubes range, supplying seamless and welded SS 304, 304L, 316, 316L, 321 and duplex 2205 heat exchanger tubes to ASTM A213,ASTM A249,ASTM A269 and ASTM A789 / ASME equivalents. Every tube is manufactured under ISO 9001:2015 quality systems, tested for 100% radiography or eddy current compliance, and dispatched with EN 10204 3.1 Material Test Certificates. Whether you need straight lengths, U-bent tubes, or finned/coiled configurations for a shell-and-tube heat exchanger,condenser,boiler or superheater, our Mumbai-based facility stocks ready sizes and manufactures to custom specification.
Technical Data
Stainless Steel Heat Exchanger Tube Specification
| Parameter | Details |
|---|---|
| Seamless Standard | ASTM A213 / ASME SA213, ASTM A269 / ASME SA269, ASTM A789 / ASME SA789 |
| Welded Standard | ASTM A249 / ASME SA249, ASTM A269 / ASME SA269, ASTM A789 / ASME SA789 |
| Grades | TP304, TP304L, TP304H, TP316, TP316L, TP316H, TP316Ti, TP309S, TP310S, TP321, TP321H, TP347, TP347H, Duplex S31803/2205 |
| Delivery Condition | Annealed & Pickled (AP), Bright Annealed (BA), Cold Drawn, Polished, Mill Finish (MF) |
| Outer Diameter Range | 6.35 mm – 127 mm |
| Wall Thickness Range | 0.5 mm – 5 mm |
| Length | Up to 20 metres (straight) or custom cut length |
| U-Bend Radius | 1.25 x OD, up to 1700 mm |
| Tolerance | ± 0.05 mm (typical; per ASTM A213/A249 chart below) |
| End Finish | Plain End, Beveled End, Threaded |
| Form | Seamless, Welded, U-Tube, Straight Tube, Coiled/Finned Tube |
| Value-Added Services | Cutting, beveling, threading, polishing (electro & commercial), draw & expansion, bending, annealing & pickling |
| Test Certification | EN 10204 3.1 / 3.2 MTC, 100% Radiography/Eddy Current Report, Hydrostatic Test, Third-Party Inspection (SGS/BV/DNV/Lloyds), Fumigation Certificate |
| Port of Dispatch | Mumbai (Nhava Sheva / JNPT), India |
| Applications | Shell & tube heat exchangers, condensers, boilers, superheaters, air-conditioning, chillers, solar water heaters, process coolers |
Chemical Composition of SS Heat Exchanger Tubes (%)
| Grade | C max | Mn max | Si max | Cr | Ni | Mo |
|---|---|---|---|---|---|---|
| TP304 | 0.08 | 2.00 | 0.75 | 18.0–20.0 | 8.0–11.0 | – |
| TP304L | 0.035 | 2.00 | 0.75 | 18.0–20.0 | 8.0–13.0 | – |
| TP316 | 0.08 | 2.00 | 0.75 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
| TP316L | 0.035 | 2.00 | 0.75 | 16.0–18.0 | 10.0–15.0 | 2.00–3.00 |
| TP321 | 0.08 | 2.00 | 0.75 | 17.0–20.0 | 9.0–13.0 | – |
| TP347 | 0.08 | 2.00 | 0.75 | 17.0–20.0 | 9.0–13.0 | – |
Mechanical Properties of SS Heat Exchanger Tubes
| Grade | Tensile Strength (MPa, min) | Yield Strength (MPa, min) | Elongation (%, min) |
|---|---|---|---|
| TP304 | 515 | 205 | 35 |
| TP304L | 485 | 170 | 35 |
| TP316 | 515 | 205 | 35 |
| TP316L | 485 | 170 | 35 |
| TP321 | 515 | 205 | 35 |
| TP347 | 515 | 205 | 35 |
Dimensional Tolerances (ASTM A213 / A249)
| OD Range (inches) | OD Tolerance (+) | OD Tolerance (−) | WT Tolerance (+) | WT Tolerance (−) |
|---|---|---|---|---|
| Under 1.000 | 0.004" | 0.004" | 20% | 0% |
| 1.000 – 1.500 | 0.006" | 0.005" | 20% | 0% |
| 1.501 – 1.999 | 0.008" | 0.008" | 22% | 0% |
| 2.000 – 2.499 | 0.010" | 0.010" | 22% | 0% |
| 2.500 – 2.999 | 0.012" | 0.012" | 22% | 0% |
| 3.000 – 4.000 | 0.015" | 0.015" | 22% | 0% |
| 4.001 – 5.000 | 0.015" | 0.025" | 22% | 0% |
Types of Stainless Steel Heat Exchanger Tubes We Supply
- Seamless Heat Exchanger Tubes (ASTM A213): No weld seam, suited to high-pressure, high-temperature boiler and heat exchanger service.
- Welded Heat Exchanger Tubes (ASTM A249): Longitudinally welded from strip, tight tolerance, cost-efficient for shell-and-tube condensers.
- U-Bend Tubes: Bent to eliminate one set of tube-sheet joints in U-tube heat exchangers, reducing leak points.
- Straight Tubes: For fixed tube-sheet and floating-head heat exchanger designs.
- Finned Tubes: Increase surface area for improved heat transfer efficiency in air-cooled exchangers.
- Coiled/Spiral Tubes: Compact heat transfer coils for immersion heating/cooling applications.
Applications of Stainless Steel Heat Exchanger Tubes
- Shell-and-tube heat exchangers (oil & gas, petrochemical, refining)
- Condensers and superheaters in power and process plants
- Boiler tube bundles, including waste heat boilers and air preheaters
- HVAC/air-conditioning coils and chillers
- Solar water heater systems
- Pharmaceutical and food-grade process cooling/heating
- Retubing existing heat exchangers during shutdown/turnaround maintenance
Why Choose Amardeep Steel as Your Stainless Steel Heat Exchanger Tube Manufacturer in India
- ISO 9001:2015 certified manufacturing and quality system
- In-house PMI verification, mechanical testing, and 100% radiography/eddy current testing
- EN 10204 3.1 MTC on every consignment; 3.2 via third-party inspection (SGS/BV/DNV/Lloyds) on request
- Custom sizing, bending, and finishing to reduce project wastage and lead time
- Export documentation and packaging for sea/air freight, with a track record of on-time delivery across the Middle East, Europe, Africa, and Southeast Asia
- Direct factory pricing with no intermediary mark-up
Frequently Asked Questions
What is a stainless steel heat exchanger tube used for?
It transfers heat between two fluids inside a shell-and-tube heat exchanger, condenser, boiler, or superheater without letting the fluids mix.
Which grade is better for heat exchanger tubes 304 or 316?
304 is economical for general, non-chloride service. 316/316L, containing molybdenum, resists chlorides and acids better and is preferred for marine, chemical, and offshore duty.
What is the difference between seamless and welded heat exchanger tubes?
Seamless (ASTM A213) tubes have no weld seam and suit higher-pressure service; welded (ASTM A249) tubes offer tighter tolerance and are typically more economical for lower-pressure duty.
What size range does Amardeep Steel supply?
6.35 mm to 127 mm OD, 0.5 mm to 5 mm wall thickness, straight lengths up to 20 m or U-bent to 1.25 x OD radius, with custom sizes on request.
What determines the price of stainless steel heat exchanger tubes?
Grade, size, wall thickness, delivery condition, quantity, and certification requirements. Share your spec for an itemised quote.
Get a Quote on Stainless Steel Heat Exchanger Tubes
Stainless steel heat exchanger tubes in ASTM A213, A249 and A269 give you the best combination of corrosion resistance, high-temperature strength and hygienic surface finish for any duty where carbon steel or alloy steel won't hold up backed by MTC 3.1 and full mill certification. Tell us your grade, size and quantity and we will respond with pricing and availability from stock.
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