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Example calculation

Pipe bends under internal pressure

according to ASME B31.3, API-530, TRD-301 und EN 12952-3

Input data

  Outside diameter da   mm
  or inside diameter di   mm
  Bend radius for outside diameter R   mm
  or bend radius for inside diameter r   mm
  Wall thickness at the inside bend radius svi   mm
  Wall thickness at the outside bend radius sva   mm
  Wall thickness at the sidewall on the bend centerline radius svm   mm
  Internal design pressure pi   bar
  Design temperature Tm   °C
  Allowable stress in tension Sm   N/mm²
  Material type     

Results

  ASME
B31.3
  TRD
301
  API
530
  EN
12952
 
  Minimum required wall thickness inside svi         mm
  Minimum required wall thickness outside sva         mm
      corresponding outside diameter da         mm
      corresponding inside diameter di         mm
  Minimum required wall thickness at the centerline svm             mm
 
  Maximum allowable internal pressure pmax         bar
  Pressure efficiency          %
 
 

Attachments

  Sketch:
 

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