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  1. XL83NL

    Welding of duplex SS pipe 30 "

    API TR 938-C
  2. XL83NL

    Very High Temperature Piping Stresses

    Thanks. Did you mean N06002, and 253MA (instead of 256MA)? Neither of these seems to outperform N06025 when it comes to allowables above 1100 deg C.
  3. XL83NL

    Very High Temperature Piping Stresses

    Didn’t knew if the existence of that publication, excellent. Thanks. Do you happen to know of a more recent publication? These alloys are all great and to some extent readily available, but they’re some 60 years old. With nowadays technological developments there should be some alloys that...
  4. XL83NL

    Need help identifying strange fitting

    Do you have a picture (or more than 1) from a different angle?
  5. XL83NL

    Inventor 2026 ...................

    Yes. Version 2026.0.1 is current. See https://help.autodesk.com/view/INVNTOR/2026/ENU/?guid=Inventor_ReleaseNotes_updates_2026_0_1_fixed_bugs_may_html
  6. XL83NL

    ASME B16.9 fittings in EN-13480 design code

    For fittings, EN 13480 relies on EN 10253. That standard has two types of design for each fitting; type A and B. Type A has a pressure resting that’s less than an equivalent sized seamless pipe rating. The derating is quite complex, or at least not straight forward. Type B has the same rating as...
  7. XL83NL

    Tri-clamp unit

    Luka, Im the EU as well, and given the businesses we work for, we have a lot of similarities. But Id suggest you to not - ever - go for a TC with these dimensions and pressures ever again. You've been given sound (and free!) advice form LI and ES here, and take that for granted. I get the...
  8. XL83NL

    ASME B16.9 fittings in EN-13480 design code

    Interesting question. (Im Dutch as well and we also often stumble on some of the nasty quirks and shortcomings of working with EN 13480). Apart from the previous advices given, what you could also is show that the 'B31.3' equivalent strength (or call it pressure rating) meets the EN 13480...
  9. XL83NL

    What materials for design of ultra-supercritical boiler tubes?

    There’s some literature on this subject. I’m not familiar with these applications though I have done some high temp jobs (with lower pressures) using some of these alloys. From what I’ve read 740/740H is mentioned frequently said to be the next best candidate, along with 617. Their resistance to...
  10. XL83NL

    Bentley Autopipe Question

    Hi Idan. I’m happy to show/help you but it’s a bit difficult through a forum. AutoPIPE is a bit quirky with these kind of things at first but once you get the hang of it, it’s a quite good I think. Their (online) forum and help are also quite good. Are you in Amsterdam by any chance this week...
  11. XL83NL

    How to Manage Pipe Support Lift-Off in Stress Analysis

    Thanks for the feedback Ed, much appreciated!
  12. XL83NL

    Bolt Torque and Bolt preload query

    You keep on saying and saying this r, not only in this post, but also several other posts. Yet, you never provide a decent argument. When questioned, you mention you're not a tutor. That may be true, but nog giving answers means you don't seem to be competent either. There are plenty good...
  13. XL83NL

    Forming of PV welded parts

    We’ve had similar applications, though we would make sure the machining is done first. Good point from TGS4, given the size certain inspections are very difficult. Do a complete PT on the inside. That’s how we found an issue in the past (though we had a cladded inside where the clad layer...
  14. XL83NL

    Piping Class Design relationship with PED

    Id have to disagree, that's incorrect. The PED doesn't 'recognize' codes. There are harmonized standards however, like EN 13480, that fulfill and meet all PED requirements if such design code is applied in full. In those cases, no additional work is required during the conformity assessment to...
  15. XL83NL

    GTAW WPS using GTAW/SMAW PQR

    Your construction code (which you haven't specified, such as B31.3 or VIII-1) may set additional, more stringent requirements on top of ASME IX. Take those into consideration as well.
  16. XL83NL

    Bolt Torque and Bolt preload query

    Ive read it. Now post which sections underline your statements, to prove you’re right (why does it feel I’m talking to a Trumpist?)
  17. XL83NL

    Bolt Torque and Bolt preload query

    r, please provide some technical basis or background for your side of the story. So far its the old song going on all bolt torque threads where you comment on: you mention elongation should be used, but never provide a reasonable or viable argument for your side of the story. Please do that...
  18. XL83NL

    Very High Temperature Piping Stresses

    Nah, that wont help, line pipe is for pipeline codes. The report is for X60-X70 grades up to 250 F.
  19. XL83NL

    New Snack food sweeping AMERICA !!

    This made me think; where has Pats pub gone to? Where are the non-engineering off topic (political) discussions done now at ET? I can’t find them anymore!
  20. XL83NL

    Bolt Torque and Bolt preload query

    That's my understanding too, but r6155 keeps on coming with the same reply over and over in each thread about bolting, torque, etc. His posts are usually too short to truly understand his reasoning. I sincerely hope that, based on the feedback in this thread, he can provide arguments for his...

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