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  • Users: xray1366
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  1. xray1366

    Qualification test for ultrasonic testing operator

    Hi dear friends, For some reasons, we ,as the employer, have decided to requalify all the UT operators who have been accepted by both contractor and third part authority. We intend to use some test pieces (in the form of pipe, not plate) which are welded by an experienced welder and we...
  2. xray1366

    Brazing and Soldering applications

    Hi everybody. I searched into Internet for Brazing and Soldering applications and found somthings but I want to know more about them separately, and what are the common applications. Thank you.
  3. xray1366

    Standards related to "Brazing and Soldering filler metals"

    Hi everyone. I want to know which standards are used for filler metals in Brazing and Soldering. Thank you in advance.
  4. xray1366

    Sand pad electrical resistivity in cathodic protection

    Hi! I'm working in a project that believes the resistivity of sand used for sand pad must be 250 to 500 ohm.m for cathodic protection of existing tanks and piping. I need to know which standard mention the electrical resistivity required for cathodic protection of these items? NACE? API? ASTM...
  5. xray1366

    Cracking after PWHT

    Hi. I want to know what types of Cracking can occur after PWHT, and how size each type of cracking can grow? Thank you for your consideration.
  6. xray1366

    Solidification Cracking

    Hi everyone. My QC Manager wanted me to search for Solidification Cracking and find out when the Solidification Cracking takes place (when W/D < 0.7 or W/D < 1)? And what are the Parameters W and D? Thank you for your help.
  7. xray1366

    Use of Permanent and Portable Reference Electrodes

    Hi. I want to know why we use both of Permanent Reference Electrode and Portable Reference Electrode in Impressed Current Cathodic Protection? Why don't we use the Portable lonely? Indeed Why do we use the Permanent one? Thanks.
  8. xray1366

    Pipeline &amp; Piping

    Hi. What are the differences between the Piping and Pipeline? Thanks.
  9. xray1366

    Purgeless Electrode

    Hi. I searched Google for the phrase "Purgeless Electrode" but I didn't find anything useful about it, I want to know the definition and applications of the "Purgeless Electrode". Thank you for your help.
  10. xray1366

    differences between welding gases

    I want to know the differences between the Backing gas, Trailing gas and the Shielding gas, Also the Standard(by details) that these words are defined in it(I quess in ASME Sec. ix) Would you help me please! I'm a new comer to this Website. Thank you.

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