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  1. Kurniatullah

    Filler metal selection for welding dissimilar weld

    Dear Expert, In this week, i preparing procedure qualification for welding, this WPQT for new WPS for welding V-anchor to shell/head The other information as below: Equipment : Reactor Reference Code : ASME Sect. VIII Div.1 Latest Edition Design Temperature : 1000degC Material : SA516-60N...
  2. Kurniatullah

    Stress relieve cover by PWHT

    Dear Professional, Now, i preparing procedure for heat treatment, i have equipment as below condition - Material SA516-70N - Extreme Fiber elongation over than 5% - PWHT should be performed due to special service, my question: whether we can performed PWHT only, due to stress relieve will...
  3. Kurniatullah

    holding time of solution annealing for tube (Stainless Steel)

    Dear all, i have U-tube material with solution annealing due to extreme fiber elongation greater than 5%, material : SA312-TP304 Thickness : 2.11mm In mill certificate mentioned the holding time is 15 second. it is correct? please advise or give me reference whether 15 second is correct or...
  4. Kurniatullah

    calculation thermal analysis PWHT

    Hi can we calculate thermal analysis on material when PWHT or after PWHT. please inform reference for calculate Regards KRN
  5. Kurniatullah

    Inhibitor for Hydrostatic testing Pressure Vessel

    i found spec hydrostatic test for column/pressure vessel mentioned that the water hydro test shall be mixed with inhibitor. the water shall have a maximum chloride content of 30ppm and shall in addition contain an inhibitor, the inhibitor shall be constituted of 3 ppm of sodium nitrate (Na...
  6. Kurniatullah

    Welding; AWS E309/E309L not allowed

    i found spec welding overlay and dissimilar weld from my client mentioned that AWS E309/E309L shall not be used when design temperature over than 315degC or when PWHT is required. my questions is why not allowed?

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