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Lens Bellows

Lens bellows could provide the right solution to piping, ducting and vessel thermal growth problems compared to conventional thin walled metal bellows.

Thick-wall expansion joints are used primarily in heat exchangers and large diameter piping systems where thin-wall expansion joints would not be sufficient.

Lens bellows

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Advantages of Lens Bellows

Dents and gouges create stress risers in thin ply bellows which result in fatigue cracks over time. Lens bellows have the advantage of resisting against mechanical damage better than thin wall bellows.

  • Sizes from DN200-DN8000
  • Thicker wall of lens bellows holds up better to corrosion attacks
  • Weld repair can be performed by plant maintenance staff on thick walled bellows.
  • Drain couplings can be added to the bottom of the convolution to prevent condensate build up
  • Common use of carbon steel material
  • Limitless convolution height
  • Thick walled, high convolution is durable and lasts for a long time.

Applications of Lens Bellows

  • Iron and Steel Industry
  • Mining Industry
  • Chemical Industry
  • Power Stations
  • Cement Factories

Design Values

DN

200 – 8000

Bellows Material

304, 316, 321, P265GH, P355GH etc

Flanged Material

Carbon Steel, Stainless Steel

Design Pressure

6, 10, 16 barg

Design Temperature

400°C

Please consult with our technical department for different working conditions and design parameters.

Industries we work with

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