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Metal Bellows, Expansion Joints And Compensators 

Bellows unlike springs, in most of their deflections produce bending stresses in excess of the materials’ yield strength. Understanding the performance characteristics and capabilities of various metal alloys in this “plastic” deformation region requires years of design experience and testing. Because of the unique challenges faced when designing an expansion bellow it is critical that the joint be designed and manufactured by someone who has the engineering and practical experience to design an expansion joint that will perform as required.

The primary function of a bellows expansion joint is to absorb the thermal expansion or contraction of a pipeline while, at the same time, containing the flowing media and withstanding the design temperature and pressure. This is achieved through the flexibility that is designed into the bellows expansion joint.

In Some Applications Bellows are used for vibration isolations. Bellows can also be used for Pipe Mis alignments and Volume compensations.(for liquid media).

  • Crafted with Precision

    Annflex bellows are crafted with precision. Every bellow manufactured here carefully made to suit its application.

  • Thorough Engineering Experience

    The core team brings this beautifully crafted bellows to life through thorough years of engineering experience.

  • Rigorous Quality Checks

    Every Bellow manufactured here is put through rigorous quality checks to detect even the smallest of flaws and rectify it.

  • Expert Support

    Not only do we provide exceptional bellows, but also expert support for your All Piping Stress /Vibration related issues.

  ISO 9001:2015 Certified

Annflex Bellows is an ISO 9001:2015 Certified Company.  ISO 9001:2015 specifies requirements for a quality management system where an organization

    • Needs to demonstrate its ability to consistently provide product that meets customer and applicable statutory and regulatory requirements, and
    • Aims to enhance customer satisfaction through the effective application of the system, including processes for continual improvement of the system and the assurance of conformity to customer and applicable statutory and regulatory requirements.

Products & Range

Convoluted thin sheet multiply metallic bellows circular – 2″ (50NB) up to 300″ (7500 NB) & No size and shape bar for other profiles. Design temperature (-)1 96°C to 2500°C & Pr. full vacuum to 150 Kg./cm2.

  • The technique is a hydraulically operated expanding mandrill process with utmost care in minimizing the bellow’s thinning as low as 3%.
  • Electronically controlled TIG welding ensures smooth weldments at each joints.