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Stainless Steel 347 Corrugated Tubes – High-Performance Tubing for Extreme Applications

Author: Aakash Shah
by Aakash Shah
Posted: Jul 27, 2025

In industrial sectors where strength, flexibility, and corrosion resistance are paramount, Stainless Steel 347 Corrugated Tubes stand out as a preferred solution. These tubes are specifically designed to withstand aggressive environments and temperature fluctuations, making them suitable for a wide range of applications, from heat exchangers to chemical processing. Let’s explore the features, benefits, and uses of these robust and reliable tubes.

What are Stainless Steel 347 Corrugated Tubes?

Stainless Steel 347 is a stabilized austenitic stainless steel containing chromium, nickel, and the stabilizing element niobium (columbium). The addition of niobium prevents carbide precipitation during welding and high-temperature exposure, thus enhancing corrosion resistance.

When fabricated into corrugated tubes, this alloy offers enhanced flexibility and thermal performance. The corrugations allow the tube to expand, contract, and absorb vibrations, making it ideal for demanding applications.

Key Features of SS 347 Corrugated Tubes
  1. Excellent High-Temperature Strength

    Stainless Steel 347 performs exceptionally well at high temperatures (up to 870°C), making it ideal for thermal cycling environments.

  2. Superior Corrosion Resistance

    The alloy resists intergranular corrosion, especially after welding or exposure to high heat, thanks to the niobium content.

  3. Enhanced Flexibility

    Corrugations allow the tube to bend and flex without losing structural integrity, which is perfect for systems subject to vibration or movement.

  4. Good Weldability and Formability

    SS 347 is easy to fabricate, weld, and shape without compromising its mechanical properties.

  5. Low Maintenance

    Its resistance to oxidation and scaling translates into a longer service life with minimal upkeep.

Applications of Stainless Steel 347 Corrugated Tubes

Due to their unique structure and chemical composition, these tubes are widely used in:

  • Heat Exchangers

    Corrugated tubes improve heat transfer efficiency and accommodate thermal expansion.

  • Aerospace and Power Generation

    Their ability to resist creep and oxidation at high temperatures is crucial for turbines and reactors.

  • Chemical and Petrochemical Industries

    Excellent resistance to acids, bases, and chlorides makes them ideal for transporting aggressive chemicals.

  • Automotive Exhaust Systems

    Their ability to handle high temperatures and corrosive gases is perfect for exhaust applications.

  • Cryogenic and Vacuum Systems

    Corrugated tubes maintain flexibility and integrity under extreme low temperatures and vacuum pressure.

Advantages of Choosing SS 347 Corrugated Tubes
  • Long-lasting performance in harsh environments
  • Reduced thermal stress and vibration damage
  • Increased surface area for better heat exchange
  • Minimal risk of cracking or leakage during expansion/contraction cycles
  • Suitable for both static and dynamic applications
Why Choose Stainless Steel 347 Over Other Grades?

Compared to grades like 304 or 316, SS 347 offers better thermal stability and resistance to intergranular corrosion, especially after welding. Its stabilization with niobium makes it a preferred choice for continuous service at elevated temperatures, which is critical in industries like aerospace, power generation, and chemical processing.

Conclusion

Stainless Steel 347 Corrugated Tubes offer the perfect blend of strength, flexibility, and corrosion resistance. Whether you're dealing with high temperatures, harsh chemicals, or pressure fluctuations, these tubes deliver reliable performance with minimal maintenance. Their unique design and material composition make them a trusted choice across industries looking for long-term efficiency and durability.

Looking for top-quality SS 347 Corrugated Tubes?

Metinox Overseas offers a wide range of stainless steel tubing solutions designed to meet global quality standards and industrial requirements. Contact us today to get a competitive quote or learn more about our product range.

About the Author

Metinox Overseas is a renowned manufacturers, exporters, stockists, stockholders, and suppliers of a qualitative range of Stainless Steel 316 Boiler Tubes

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Author: Aakash Shah

Aakash Shah

Member since: May 24, 2024
Published articles: 8

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