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Recent content by matengz

  1. matengz

    Rutile type electrodes

    why the client stated in the project specification: Rutile type electrodes (E-3XX-17 or E-3XX-16) are strictly forbidden for any kind of welding operation for Stabilized Stainless Steel (AISI 321 and 347), including flange facings, overlays and build-ups. For the rest of AISI 300 Stainless...
  2. matengz

    A335 P22

    in accordance to ASME SEC IX QW-431. can we do a PQR using ER70S-6+ E7018-1 to weld A335 P22 IF PWHT NOT REQUIRED.
  3. matengz

    A335 P22

    in accordance to ASME SEC IX QW-431. can we do a PQR using ER70S-6+ E7018-1 to weld A335 P22 IF PWHT NOT REQUIRED.
  4. matengz

    groove angle

    the sit conditions will be as below: 1- 70 degree groove angle for butt weld 2- 45 degree groove angle for branch
  5. matengz

    groove angle

    When the project specification states that WPS shall be requalified when a decrease in groove angle more than 10 degree.so please advise which one of the below is the right way to qualify a WPS: 1-PQR using single V with groove angle 50 degree (to cover 70 degree butt weld and branch connection...
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