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What Is Stainless Steel Heat Exchanger Tube？
Product Definition：
Stainless steel heat exchanger tubes are seamless or welded tubes specifically engineered for heat transfer applications in boilers, superheaters, condensers, evaporators, and heat exchangers. Manufactured from austenitic stainless steels (300 series), these tubes offer exceptional resistance to high temperatures, high pressures, oxidation, and corrosive media – making them the preferred choice for power generation, chemical processing, petrochemical, and HVAC industries.
Key Standards for Heat Exchanger Tubes：
| Standard | Description | Applicable Products |
|---|---|---|
| ASTM A213 / ASME SA213 | Seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes--3 | Seamless tubes |
| ASTM A249 / ASME SA249 | Welded austenitic steel boiler, superheater, heat-exchanger, and condenser tubes-3 | Welded tubes |
| ASTM A269 | Seamless and welded austenitic stainless steel tubing for general corrosion-resisting and low- or high-temperature services-3 | General service tubes |
| GB/T 13296 | Seamless stainless steel tubes for boiler and heat exchanger | Chinese standard |
| EN 10216-5 | Seamless steel tubes for pressure purposes – stainless steel | European standard |
Why Choose Stainless Steel Heat Exchanger Tubes？
| Factor | Stainless Steel | Carbon Steel | Copper / Copper Alloy |
|---|---|---|---|
| Corrosion Resistance | Excellent | Poor | Good |
| High-Temperature Strength | Excellent (up to 870°C) | Poor (>350°C) | Poor |
| Oxidation Resistance | Excellent | Poor | Good |
| Fouling Resistance | Excellent (smooth surface) | Moderate | Excellent |
| Service Life | Long | Short | Moderate |
| Lifecycle Cost | Low | High | Moderate |
Key Characteristics：
| Feature | Description |
|---|---|
| High-Temperature Strength | Austenitic grades maintain mechanical properties up to 870°C (310S)-33 |
| Excellent Corrosion Resistance | Chromium and nickel provide superior resistance to oxidation, pitting, and chemical attack |
| Smooth Internal Surface | Ra ≤0.4μm reduces fouling and improves heat transfer efficiency-6 |
| Precision Dimensional Tolerances | OD tolerance ±0.10mm, wall thickness ±10%, ovality ≤0.5% OD-6 |
| Good Weldability & Formability | Suitable for U-bending, coiling, and expansion into tube sheets |
| Long Service Life | Reduces maintenance downtime and replacement costs |
| 100% Recyclable | Environmentally friendly with no loss of properties |
Product Forms Available：
Straight Tubes – Standard lengths: 3m, 6m, 9m, 12m, or custom
U-Bend Tubes – Custom bend radii and leg lengths-
Coiled Tubes – Long continuous lengths for special applications
Finned Tubes – Enhanced heat transfer surface area
Each batch includes EN 10204 3.1 mill test certificate with full chemical, mechanical, and dimensional data. 100% eddy current or hydrostatic testing. Third-party inspection (SGS, BV, TÜV) supported. MOQ: 1 ton, trial orders welcome.
Key Specifications – Stainless Steel Heat Exchanger Tube
| Parameter | Specification / Range | Remarks |
|---|---|---|
| Standards | ASTM A213 / ASME SA213 (seamless), ASTM A249 / ASME SA249 (welded), ASTM A269, GB/T 13296, EN 10216-5 | Others on request |
| Austenitic Grades | TP304, TP304L, TP304H, TP309S, TP310S, TP316, TP316L, TP316Ti, TP317L, TP321, TP321H, TP347H, TP347HFG- | |
| Duplex Grades | 2205 (S31803/S32205), 2507 (S32750) | High strength, excellent chloride resistance- |
| Super Austenitic | 904L, 254SMO | Extreme corrosion resistance- |
| Product Type | Seamless / Welded (ERW, EFW) | |
| Outer Diameter (OD) | 6 mm – 219 mm (1/4″ – 8″) | Custom on request- |
| Wall Thickness | 0.5 mm – 12 mm | |
| Length – Straight | 3 m, 6 m, 9 m, 12 m, or custom | Up to 30m available- |
| Length – U-Bend | Custom leg lengths up to 16.5m, developed length up to 30m- | |
| Length – Coiled | Up to 10,000m-1 | |
| Surface Finish | Annealed & pickled, bright annealed, polished (Ra ≤0.4μm), electropolished (EP)-6 | |
| End Finish | Plain ends, beveled ends, threaded | |
| Density | 7.93 g/cm³ (304/316) | |
| Testing | Chemical analysis, tensile, hardness, flattening, flaring, hydrostatic, eddy current (100%), UT (optional)-20 | Mill cert EN 10204 3.1 |
| Packaging | Bundled with end caps, steel straps, wooden case / pallet | Seaworthy, ISPM 15 |
Wuxi Yansheng Technology Co., Ltd. – Company Profile
Wuxi Yansheng Technology Co., Ltd. is a comprehensive technology enterprise specializing in high-quality metal raw material supply and precision processing services. Located in Wuxi City, a major steel distribution center in China, the company leverages the mature industrial chain advantages of the Yangtze River Delta region to provide professional material solutions to global customers.
As a technology-driven enterprise, Yansheng Tech maintains strategic cooperation with several well-known steel mills (such as TISCO, Baosteel, JISCO, Dongfang Special Steel, etc.) and is an authorized distributor of these mills. Our main products include stainless steel (304/316/BA/EP pipe), carbon steel, silicon steel, copper, aluminum and other materials in the form of sheets, pipes, coils, as well as custom-processed parts.
Core Business Highlights:
Material Supply: We maintain sufficient stock inventory, offering 304/316 stainless steel sheets, pipes, coils, API 5L casing, electrical steel, and more. We also accept orders for special steel grades and non-standard specifications.
Precision Processing: Equipped with imported mirror polishing machines, water jet cutting machines, high-precision slitting/leveling lines, large CNC milling machines, boring machines, and more. We provide customized services including BA/EP pipe finishing, medium plate polishing, matte finishing, embossing, plasma cutting, etc.
Main Applications: Our products are widely used in industries such as solar energy, pressure vessels, boilers, electric heating equipment, petrochemicals, environmental protection machinery, pharmaceutical and food processing, and new energy vehicles.
Our processing center is located in Xishan District, Wuxi City, covering nearly 10,000 square meters, with an experienced technical and service team. We adhere to the business philosophy of "Technology First, Quality Oriented, Service Supreme" , providing 24/7 warehousing and logistics support as well as comprehensive after-sales service. Yansheng Tech is committed to being your trusted long-term partner.
Frequently Asked Questions (FAQ)
Q1. What products do you mainly supply?
We mainly supply stainless steel (304/316/BA/EP pipes), carbon steel, silicon steel, copper, aluminum, and other materials in sheets, pipes, and coils. Customized processing services are also available.
Q2. Do you have stock available?
Yes, we maintain sufficient stock for most standard specifications. For non-standard sizes, we can accept orders with reasonable lead time.
Q3. Can you provide MTC (Mill Test Certificate)?
Yes, we provide MTC for every shipment. Third-party inspection (SGS, TÜV, BV, etc.) is also available upon request.
Q4. Do you support video inspection before shipment?
Yes, we fully support video inspection. You can also arrange an agent or third party to visit our factory for on-site inspection before shipment.
Q5. What are your main export markets?
We export to Southeast Asia, the Middle East, Europe, Africa, and South America. We have rich experience in international trade and export documentation.
Q6. What payment terms do you accept?
We accept T/T (wire transfer), L/C at sight (irrevocable), and sometimes a combination of T/T deposit + L/C balance. Payment terms are negotiable based on order size and customer history.
Q7. Can you provide samples?
Yes, samples are available for most standard products. For custom sizes, we may need to produce small batch samples. Sample cost and shipping are usually borne by the customer, but can be discussed.
Q8. What is your typical lead time?
For stock items: 7–10 days after order confirmation. For custom production: 20–30 days, depending on the specification and quantity.
Q9. What quality certifications do you have?
We provide MTC with every shipment. Our partner mills are ISO9001 certified. We can also assist with third-party inspections (SGS, TÜV, BV) upon request.
Q10. How can I get a quotation?
Please send us your material grade, specification (size, thickness, length), quantity, and preferred trade term (FOB, CIF, DAP, etc.). We will reply with a detailed quotation within 24 hours.
Send Inquiry to This Supplier
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