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Example calculation

Calculation of the reduction piece

according to EN 13480-3:2002 (D), edition 1 (2002-05)

Input data

  Outside diameter of the smaller tube D1   mm
  Outside diameter of the bigger tube D2   mm
  Mismatch between the middle lines of the tubes doff   mm
  Length of the reduction piece cone l   mm
  Inside overpressure p   bar
  Allowable stress of the reduction piece materials σall   N/mm²


  Wall thickness of the reduction piece s   mm
  Length of the intensification of the smaller tube l1   mm
  Length of the intensification of the bigger tube l2   mm
  Maximal cone angle α1   °
  Minimal cone angle α2   °


  1. Sketch
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