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

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-
Excellent High-Temperature Strength
Stainless Steel 347 performs exceptionally well at high temperatures (up to 870°C), making it ideal for thermal cycling environments.
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Superior Corrosion Resistance
The alloy resists intergranular corrosion, especially after welding or exposure to high heat, thanks to the niobium content.
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Enhanced Flexibility
Corrugations allow the tube to bend and flex without losing structural integrity, which is perfect for systems subject to vibration or movement.
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Good Weldability and Formability
SS 347 is easy to fabricate, weld, and shape without compromising its mechanical properties.
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Low Maintenance
Its resistance to oxidation and scaling translates into a longer service life with minimal upkeep.
Due to their unique structure and chemical composition, these tubes are widely used in:
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Heat Exchangers
Corrugated tubes improve heat transfer efficiency and accommodate thermal expansion.
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Aerospace and Power Generation
Their ability to resist creep and oxidation at high temperatures is crucial for turbines and reactors.
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Chemical and Petrochemical Industries
Excellent resistance to acids, bases, and chlorides makes them ideal for transporting aggressive chemicals.
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Automotive Exhaust Systems
Their ability to handle high temperatures and corrosive gases is perfect for exhaust applications.
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Cryogenic and Vacuum Systems
Corrugated tubes maintain flexibility and integrity under extreme low temperatures and vacuum pressure.
- 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
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.
ConclusionStainless 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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