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Recent content by Seldom

  1. Seldom

    Welding 304 SS Warping

    Hi Johnplctech, IFRs has given you sound advice but there are a couple of more/other things to try. 1. Make sure you have a tight fit if you’re applying a fillet weld and the use the smallest gap you can stand if you are using a groove joint. 2. If you use a clamping system as IFRs suggested as...
  2. Seldom

    GTAW process of Carpenter 20cb3

    Oops, I forgot to mention this in my previous reply as a possibility. Your description of "black" specks could be construed as a chrome oxide that exhibits itself on the puddle surface in the P4x's when using too high of heat input. I've observed & experienced this phenomenon and...
  3. Seldom

    GTAW process of Carpenter 20cb3

    Try using a different heat number of filler and if that doesn't change the condition, change the heat number of the pipe. Seldom "There's no such thing as a welding problem, just welding puzzles of assorted sizes!"
  4. Seldom

    reading Radiographic Reports

    For what you're asking (reading & comprehending radiographic reports), I'd suggest taking a look at ASME Sec.V Seldom "There's no such thing as a welding problem, just welding puzzles of assorted sizes!"
  5. Seldom

    Welding mitered corners of sq. tubing.

    I'd suggest using the same joint & weld symbol you used for the rest of the joint (possibily square butt). Those thin edges will quickly burn off and not effect partial or full penetration even using GMAW-SC. Seldom "There's no such thing as a welding problem, just welding puzzles of...
  6. Seldom

    Gap of 1.6 mm in socket welding

    Hi Abbver98, I highly recommend using the Gap-Alets that Tecnico1948 suggests. I originally introduced them at my plant site in 1988 and now my former (I'm retired) chemical company (second largest in the world) has included them without substitution in all of their global pipe specs for many...
  7. Seldom

    What's the purpose of the 1/4 NPT weep hole in a re-pad?

    All of the answers are to a degree correct but I suggest thinking about the impact that a leak would have on the square inches of the annular space if the pressure were contained by not having a weep hole! If your service ran at 100, 200, 300, etc. psi, would it be considered good engineering...
  8. Seldom

    Welding of stainless steel - quality

    Hi Korobi, I would second Welding1’s suggestion that you visit the particular web site he mentioned. In addition, I’d suggest paying close attention to what is stated concerning carbide precipitation and interpass temperature. It’s been my experience that even using low carbon filler & base...
  9. Seldom

    Welder Qualification

    Hi moseley, Nope, you're ok! As so often happens with anybody that posts a question, we sometimes forget to include all the info that's needed for a specific reply or maybe we don't even want a specific answer. Post'ers know what they are asking but the Reply'er sometimes has to make...
  10. Seldom

    How much weld metal is needed in a weldolet connection?

    Hi mpg, Hey, don't feel bad about not knowing about them. Heck, I had a whole company of engineers that took about nine years before they would look at a WFI catalog! ;-) Seldom "There's no such thing as a welding problem, there are only welding puzzles of assorted sizes!"
  11. Seldom

    Welder Qualification

    Hi moseley, I understand what you're saying and I might be a little rusty on Sec IX but am I not correct in the answer to his question? He didn't ask how to test his welders, he asked- "to qualify a welder for 1" thru 8" diameter pipe with W.T. ranges of 0.188" to...
  12. Seldom

    Welder Qualification

    Hi Rick44028, If you're using ASME Sec IX, make sure your test coupons are equal to or larger then 1" NPS and the wall thickness is at least .250" Seldom "There's no such thing as a welding problem, there are only welding puzzles of assorted sizes!"
  13. Seldom

    How much weld metal is needed in a weldolet connection?

    Hi mpg, WFI has the sch10/sch10 fittings and I think they're called Pipets. Once you have one in-hand, you'll notice that the amount of attachment weld is very similar to that of welding on an equivalent #3000 coupling. Seldom "There's no such thing as a welding problem, there are only...
  14. Seldom

    weld failure in monel and inconel

    Hi gozzi, Lord I hated to weld in our old Evaporator buildings! Gloves, clothing, and tools became soaked with brine and everything you touched was slimy. The very worst aspect was you were continually getting shocks when you were welding! Jeez, I hated that! Concerning the weld related...
  15. Seldom

    weld failure in monel and inconel

    Hi gozzi, There are a few questions I need to ask here. By splitting, do you mean a crack-like indication that develops and propagates to joint failure? Or are you seeing a severe corrosive degradation more or less in the center to the weld and traveling the length of the joint? Also you...
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