Pipe Standards Made Simple

180° Butt Weld SR Return Dimensions

ASME B16.9 Short Radius Fittings (180 Degree Technical Data)



Fitting Dimensions
  • Outside Diameter (OD)
    –
  • Wall Thickness (t)
    –
  • Center-to-Center (C)
    –
  • Back-to-Face (K)
    –
  • Nominal Bore (NB/DN)
    –
Unit Mass
  • Est. Fitting Weight
    – kg

Dimension Guide (Short Radius)

C (Center-to-Center): The distance between the centerlines of the two ends ($R = NPS$).
K (Back-to-Face): Total height from the back of the return curve to the face.
OD: Actual Outer Diameter of the return ends.
t (Thickness): Nominal wall thickness per schedule.
* Wall Thickness (t) Not less than 87.5% of Nominal Wall Thickness

Source: ASME B16.9 Standard (Short Radius)