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  1. matweld1

    ferrite FN range for SS

    my tube is 7.5mm WT, how could be sure that I have no hot cracking becaause of the lowest FN or how could be the right NDE to control my weld joint?
  2. matweld1

    ferrite FN range for SS

    Thanks for all I would like to know if we have to do PWHT if we have a value under the range required: Heat exchange for low temperature service, we find in different joint the FN<3.
  3. matweld1

    ferrite FN range for SS

    I would like to know when I have a SS ASTM A312 TP316 at low temperature service (-160ºC ) what is the range of the FN for the metal deposit?
  4. matweld1

    Minimum design metal temperature

    thank you for all but the questions were :Is such quotation true? Does somebody know which frabication code (i. e. ASME) support such statement? You will not find any code or standards given any precisition about the MDMT for the CS except for the material that is low temperature designation CS...
  5. matweld1

    Secure way to make tie-in

    it was 24" aluminum spiral pipe the branche connection will be with 6" aluminum pipe. the branche connection that I saw on site was made with an excuded 24"pipe. I don't know if it's wright to make a direction tie-in rienforced.
  6. matweld1

    Secure way to make tie-in

    I have an aluminum 20' spirale pipe and I would like to make a tie-in 6' on it. I would like to know wich the secure way to make this tie-in?

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