UW-13.1

[htman]

Am I required to follow the rules of UW-13.1 if I am welding a hemispherical head directly to an Appendix 2 weld neck flange? (my nominal head thk is less than my flange hub thk)

Thanks

 

[unclesyd]

If you are butt welding the head to the flange you need to refer to the fig UW-9 to provide the necessary transition taper.

What type joint are you considering?

Is your head sized for the same pipe size as the flange?