Hi!
To studding outlet pad flange, the tapped holes are provided for stud thread engagement that had been designed based on UG-44(g). However, the tapped thread connection is different form the regular stud bolts which connected with both nuts. So, what I think the regular torque using for ASME...
I am working for design a ASME 26" Studding Outlets flange for Reactor, I have question as below:
(1) Is it available to design a Class 900 Studding Outlet R.J. flange for 26" ASME B16.47 series "A" nozzle? due to the connected flange type and high design pressure 87 kg/cm^2G. @ 200℃
(2) To...
Thanks all specialist to response my question,
We had replaced all washer material into SA-540-B21,
Tighten the Bolts & Nuts with hydraulic bolt tensioning equipment,
eventually no deformation was found.
We guess that maybe the hardness of washer are insufficient or tighten method was...
We use STUD BOLT 2-1/8" Diameter and 510mm Length with 2 heavy nuts,
Bolts material SA-193-B7, the vessel operating temperture at 300℃
During hydrostatic test @ 25℃ all washer no deformation but when we did hot tightening up at operating condition we found the washer outer rim was rising up...
Hi,
I have a question, when I tighten the bolts of flange casuse the washer deformation, I don't know if the washer deformation will influence the bolts tighten force.
Does anyone can advise me how to calculate and approve deformation is acceptable.
Steven
As a vessel was requested to be designed in according with ASME Section VIII Div.2 or API 579, the design temperature is 560 degree C, operating temperature is 530~550 degree C and the design pressure 3.8 bar. the used material is SA-387-22
we would like to know how to measure high temperature...