Metal Expansion Joints

Metal expansion joints (steel expansion joints) are single or multi-walled expansion joints. They are manufactured from metal and are finished as bellows or lens expansion joints. Their bellows consist of one or several corrugations.

HKS DN 150 lateral expansion joint with oval flanges and 2 tension rods
Lateral expansion joint oval flanges tension rods by HKS
HKS DN 600 corner-relief expansion joint with welding ends and tension rods
Corner relief expansion joint welding ends tension rods by HKS
HKS stainless steel expansion joint with double bellows for absorbing radial movements with middle pipe and welding ends and heavy-duty joints at both ends
Stainless steel expansion joint double bellows middle pipe welding ends joints by HKS
HKS alloy expansion joint for use in alloy sluices during steel production
Alloy expansion joint by HKS

Advantages of metal expansion joints

  • Higher pressure range: up to PN 100
  • Higher temperature range: up to 1000 °C
  • Besides fluids and gases, also suitable for abrasive media and solids
  • Flexible connection types possible
  • Flexible extension possibilities

Disadvantages of metal expansion joints

  • Restricted suitability with many acids
  • Only partly suitable for oscillations
  • Relatively large construction lengths (e. g. with lateral expansion joints)
  • Particularly at high pressures, construction with high spring rates is required

Overview of expansion joints

Show all expansion joints