Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
(OP)
When determining PWHT requirments for an olet branch connection on a pipe how is one to know what the olet nominal thickness is? Seems these dimensions are not published but are an essential piece of the puzzle when dealing with PWHT requirments (determinig nom thickness of the weld). Any guidance/experience is much appreciated.





RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
see section 132.4.2.E
If you are using an older edition of ASME B31.1, what is the edition? Also, the 2010 Edition of ASME B31.1 was an excellent improvement in defining nominal thickness with Figure 127.4.8. D and E.
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
It may help you determining what the weld thickness is. See attach.
Also, PFI ES-49 also contains an excellent help/guide.
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
XL83NL,
That is exactly what i need! Just missing the 2 items i use most threaded and socket. Where did you get this??? Its excellent!
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
Guess that all those hours of searching the webs for useful stuff every now n then pays off.
Now, the pdf I attached is only bonney forge/WFi I believe. 9/10 weldolets I see are from zjianhg jianhg, suanchan ghianh, etc.
Could there be much difference between different MFR's designs and weldmetalthickness?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
Yes its quite common unfortunately.
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?
Yeah, right.
RE: Nominal Wall Thickness for Olets (B31.1) Weld Size PWHT?