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  1. Romain_WeldingIWE

    B.31.3/ By Others ?

    Hi All, My question must be very easy for you, In B31.3, What mean procedure qualification by Others, precisely Others ? Who is considered as Others ? Thanks for you supports
  2. Romain_WeldingIWE

    Welding difference between B31.3 and B31.12

    Have you looked at both standards and compared them on this subject? If so, what are your specific questions? Hi XL83NL, Thanks for your return, Yes I compare the both standards, I just see one difference concerning pre-heat. In B31.12 minimum temperature required is 80 degrees for any...
  3. Romain_WeldingIWE

    Welding difference between B31.3 and B31.12

    Hello All, I have a question about the B31.3 and B31.12. I would like to know the mainly difference concerning the welding ? Are there any supplementary requirements with B31.12 ? (about WPS/PQR/fabrication) Thanks a lot for your support, Best Regards

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