Pipe Standards Made Simple

180° Butt Weld LR Return Dimensions

ASME B16.9 Long 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

C (Center-to-Center): Distance between centerlines of the two ends.
K (Back-to-Face): Total height from back of return curve to face.
OD: Actual Outer Diameter of 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 Specifications