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  • Users: bladeo
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  1. bladeo

    ERW or FCAW?

    Gents, Comparatively,Is ERW welding better than FCAW in pipe making no matter what the size of pipe? Which gives the better overall weld? Thanks
  2. bladeo

    Welding P1 TO P1

    Gents,Have to weld a 12 inch sch.120 pipe P1 to P1,can't pwht due to poor engineering design. Won't bore you with details. Would like to weld with inco 82. 1)Butter with inco,maintain 200F preheat,max interpass 350F using narrow weld beads to include HAZ 2)Blend butter passes with flapper and...
  3. bladeo

    Monolithic Isolation Joint

    I have a monolithic isolation joint that has to welded into a ethane/propane line.Engineering requirements are B31.3.The pipe is 12 inch, sch. 120, P1 material which requires PWHT.The problem is the isolating filling material and ring are located approx. 12 in. from the weld which is only...
  4. bladeo

    pwht of dissimliar weld

    welding 304l to carbon steel, over 3/4 inch at the joint.Is it a requirement of b31.3 to pwht?

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