Flexible Joints : Pros and Cons

Beijing BORK Metal Hose Co.,Ltd

 Flexible Joints : Pros and Cons 

Stainless steel corrugated pipes are widely used in pipeline systems due to their flexibility, durability, 

and corrosion resistance. 

Below is a detailed analysis of their advantages and disadvantages.  

‍‍‍ Advantages ‍‍‍

‍‍1. Excellent Flexibility & Easy Installation‍‍

   - The corrugated structure allows bending without additional fittings, 

      simplifying installation in tight or complex spaces.  

   - Reduces the number of joints, minimizing potential leak points.  

2. High Pressure & Temperature Resistance 

   - Stainless steel (e.g., 304/316L) withstands high pressure (typically up to 1.6MPa or more) 

      and extreme temperatures (-50°C to 400°C), making it suitable for steam, hot water, 

      and refrigerant systems.  

3. Superior Corrosion Resistance

   - Resists rust, chemicals, and oxidation, ideal for humid, marine, or industrial environments.  

     Outlasts galvanized steel pipes.  

4. Vibration & Movement Absorption  

   - Compensates for thermal expansion, seismic shifts, or mechanical vibrations, 

      reducing stress on the pipeline system.  

5. Lightweight & Space-Saving  

   - Lighter than rigid metal pipes, easing transport and installation, 

      especially in overhead or concealed spaces.  

 Disadvantages  

1. Higher Initial Cost  

   - More expensive than PVC or carbon steel pipes, 

      though long-term maintenance costs may be lower.  

2. Increased Flow Resistance  

   - Corrugated inner walls create turbulence, potentially raising pressure drop. 

      Oversizing the pipe can mitigate this.  

3. Lower Mechanical Strength  

   - Less resistant to crushing or impact compared to solid pipes. 

      Requires protection in high-traffic or heavy-load areas.  

4. Installation Precision Needed  

   - Over-bending may cause fatigue cracks. Proper tools (e.g., tube cutters) 

      and adherence to bend radius guidelines are critical.  

5. Potential Hygiene Concerns  

   - Crevices in corrugations may harbor bacteria in drinking water systems. 

      Opt for smooth-lined variants or schedule regular cleaning.  

 Recommended Applications 

- Ideal for: 

Gas lines, HVAC systems, solar thermal pipelines, 

chemical transport, and earthquake-prone regions.  

- Avoid in: 

Ultra-high-pressure (>2.5MPa), abrasive media (e.g., slurries), 

or strictly budget-limited projects.  

 Selection Tips 

1. Verify material grade (304/316L) and 

     certifications (e.g., NSF for potable water).  

2. Choose pipes with protective sleeves to 

    prevent scratches during installation.  

3. Prefer seamless or laser-welded models to 

    enhance leak-proof performance.  

When properly selected and installed, stainless steel corrugated pipes offer reliability, 

longevity, and adaptability in diverse piping systems.

北京宝凯金属软管有限公司 
Beijing BORK Metal Hose Co.,Ltd

Banbidian, Daxing District, Beijing 102611

Tel : +8610-8923 1222

+8610-8923 1227