ASME Section VIII, Div.1 Appendix UHX
ASME Section VIII, Div.1 Appendix UHX
(OP)
Hi all,
in Appendix UHX, the expanded length of tube, ltx, is defined in terms of ASME tube-to-tubesheet joints. How would you specifiy ltx for a TEMA tube-to-tubesheet joint where typically two grooves are used ?
Thanks.
John
in Appendix UHX, the expanded length of tube, ltx, is defined in terms of ASME tube-to-tubesheet joints. How would you specifiy ltx for a TEMA tube-to-tubesheet joint where typically two grooves are used ?
Thanks.
John





RE: ASME Section VIII, Div.1 Appendix UHX
RE: ASME Section VIII, Div.1 Appendix UHX
what I mean is when the tube-to-tubesheet joint is expanded into two grooves only (without the use of any welding).If you take a cross-section through the tubesheet thickness, you would have a length of diameter equal to the tube hole size, then a groove (normally 3 mm wide x 0.8 mm on dimeter bigger than the tube hole) then a 6 mm to 7 mm length which is the same diameter as the tube hole, then another groove as per the first.In simple terms, the tube-to-tubesheet joint is expanded into two grooves, there is no welding involved.
Hope this clarifies it enough.
John