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UW-13.1

UW-13.1

(OP)
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  

RE: UW-13.1

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?

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