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  1. Mark Chester

    ASME equivalent

    Good Day Sirs, Can you help me for the equivalent material P-nmber of 15NiCuMoNb5. Hoping for everyones help :) Thank you very much :) Regards, Chester
  2. Mark Chester

    PWHT Temp. requirement for T91+T12

    Good Day Master's For SA-213 T91 to SA 213 T12 material with thickness of 3.4mm, what is the minimum and maximum requirement of PWHT for this material. thanks for your support.
  3. Mark Chester

    groove or fillet?

    good day senpai! tube to fin(round bar)weld (attachment welding) as i know, this is a groove welding, because it is a flare x groove, but the other says its a fillet welding. can i know your opinion about this? additional question, how about the acceptance criteria regarding in that weld, is...
  4. Mark Chester

    PQR (combination of GMAW-Short Circuiting and GTAW process)

    Good Day Experts, I am preparing a Procedure Qualification Record for the combination of GMAW-short circuiting and GTAW process. GTAW - for root pass for the maximum of 5.0mm GMAW - for 2nd pass to copping. My test coupon (tube) thickness is 8.9mm My Question is - is this possible for the...
  5. Mark Chester

    overlay welding

    Good Day Experts! I am seeking some advise and information regarding overlay welding using GTAW process. I have tube T2 0.5Cr-0.5Mo with Ø38.1x6.7t welded in a membrane bar of Gr.12. overlay welding shall proceed using GTAW process with a filler metal of ERNiCrFe-5 (HIG-370). any procedure or...
  6. Mark Chester

    TG-S50 Ø1.2 welding wire for GMAW short circuiting??

    Good Day experts, I need some verification/suggestions :) can I use TG-S50 Ø1.2 welding wire for GMAW process short circuiting type of arc to be welded in carbon steel material? is it safe to weld with no confliction or any risks? (just for my mock-up only) your answers/comments are very much...
  7. Mark Chester

    Applicable Welding Consumable

    Good Day expert, Can anyone help me to know the applicable welding consumable for SUH409L+SUH409L (cold rolled). any reference? SUH409L - 10.5~11.75 Cr A number - 7 Ferritic type your answers are very much appreciated. thank you in advance
  8. Mark Chester

    after PWHT

    I need some knowledge, What will happen or may I use US-36(Ø3.2) filler Wire after PWHT? we will use that US-36 filler wire as insertion in the middle of membrane panel to get the target width of the panel before weld but our available US-36 as insertion is undergone by PWHT. is it safe to weld?

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