Contact us
Change language:  

Flexible elements

BOA Flexible Elements

BOA has several manufacturing units around the globe for production of:

  • Metal hoses for automotive and industrial applications (hydro formed)
  • Metal bellows (formed and edge welded)
  • Expansion joints (metal, rubber, PTFE)

Product rangeboagroup

  • Metal hoses in sizes DN6-DN300
  • Bellows, from Ø 6mm to Ø 2100 mm
  • Expansion joints, standard sizes between DN 150 – DN 1000


Engineering – Global BOA standards – Local support

As a globally operating manufacturer with more than 100 years of experience, BOA know about the typical technical requirements of our clients. A team of highly skilled engineers and designers ensures local systematic engineering and planning support while applying harmonized global BOA engineering practices and tools.

Simplifying Complex Tasks Provides Opportunities for Innovation

The BOA Group has designed some of the most complex bellows products in the marketplace, with high-technology components on the International Space Station, on commercial and military aircraft, in emissions components for heavy trucks and passenger cars as well as in giant LNG vessels, Concentrated Solar Power stations or Fluid Catalytic Cracking oil refining processes.

Advanced Design and Analysis Tools

Part of an organization-wide commitment to systematic planning and execution, BOA has invested heavily in the up-front process necessary to analyze, monitor, and mitigate risk on all our programs, whether it is about:

  • Small or large diameter application
  • Hot or cold temperature conditions
  • Static or dynamic load input
  • High or very low required spring rate
  • A specific unique product or standard high volume production

Certified Engineering Quality

The BOA Engineering and Design facilities are audited as per ISO/TS 16949 and ISO 9001 every year.



Common Industry Codes

  • ASME Section VIII, Division 1
  • ASME B31.1
  • ASME B31.3
  • AD Merkblatt, B13
  • Codap 2000
  • EN 13445 (Chap. 14 for PED compliance)
  • EN 14917
  • IGC
  • Stoomwezen