archae86
It is extremely important. The smooth face is not indicative of either wear or fatigue, imo. For all we know that could be a keyway to accept a "c" ring, coupling m/f lines. It's tempting, but the "pipe" was done to exhaustion, so suffice that I still believe the "misalignment" is wear from excess vibration twixt male and female, not a blown end bore assignment. To add (edit), the length of the arrow indicating fatigue could be the limit of the metal as built. In other words, the smooth area defines the "former" position of the missing metal. That is oddball, and if I didn't know better, I would say that interpretation is misleading.......not to mention that the gouge at the end of the pipe mimics the limit of vibration. Note the "swirl" marks on the face of the injury? One might almost calculate the frequency of the damaging vibration from those telltales....
chuchu
Smokin' Eddie, that ain't too pretty much thick enough for oil, innit ?
bear