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Recent content by SuPeR9981

  1. SuPeR9981

    AWS D1.1 Table 4.5#34

    Hi experts, Based on AWS D1.1 Table 4.5 #34 stated that " The omission, but not inclusion, of backing or backgouging" Therefore, if approved WPS qualified with backing or backgouging it doesn't qualified without backing or backgouging as omissions of backing or backgouging is an essential...
  2. SuPeR9981

    ASME IX QW 452.1 (b) (3) Interpretation

    QW 452.1 (b)(3) Thickness of test coupon of 3/4 in . (1 9 mm) or over shall be used for qualifying a combination of three or more welders each of whom may use the same or a different welding process . How to interpret this statement? If I weld 20" sch 160 (50.01mm) of pipe using two welders is...
  3. SuPeR9981

    ASME IX & API 1104 Time between passes

    Thanks for well explanation [bigsmile]
  4. SuPeR9981

    ASME IX & API 1104 Time between passes

    Hi All, In API 1104, we need to record down all the time lapse between passes from root, hot , fill until cap. However for ASME IX does not mention about that. Now my problem is if I finish the welding of root, hot and one layer of fill passes then I stop welding and let the weld bead...
  5. SuPeR9981

    ASME IX - Ar Gas Purity

    Thank you david339933 for your explanation. My WPS did mention about the argon purity, and there is no requalified needed if I revised my WPS to lower argon purity however I need bear the risk on quality of weld right?
  6. SuPeR9981

    ASME IX - Ar Gas Purity

    Hi All, for GTAW process, Argon purity is an essential variable in ASME IX? If my WPS qualified with 99.997% purity of argon but now I want to weld by using 99.95% purity of Argon for both purging and shielding gas do I need requalified my WPS ?
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