Dear specialist :

Now I meet a problem :
the one DN800X6 pipe line, it is obviously D/T>100.
As we know, in appendix D of asme31.3, for SIF of elbow, code says if D/T<100, the sif is available.

now how to do? who can give some comments?

Thanks!

This question was asked on the forum many times. Please use the search function.
Yes SIFs are not accurate and you can use FEA for more accurate results