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  1. IQM

    Material Grade

    The standard A860 is more strict in both chemical and mechanical requirements, you can use WPHY 42, 46 and maybe WPHY 52 as WPL6 , when the tensile strength is not over 95 ksi, the yield strength,elongation and charpy values are lower for WPL6 with not maximum values. The WPL3, WPL8 and WPL9 are...
  2. IQM

    a105 instead of a694

    I believe that you are talking about flanges, low carbon steel, both standards, A105 and A694, are very different in the chemical and mechanical requirements,
  3. IQM

    Heat Treated Heads

    JBW76 would tell us what heat treatment process was done to the heads? Do you need to do a PWHT after the vessel is completed?
  4. IQM

    guidelines on manufacturing high pressure flanges

    This is a very general question, what material will be used? Stainless, low carbon steel, high yield material so when you know the material you need to know which specification applied to them. I agreed with EdStainless in all points
  5. IQM

    Surface defect on API 5L pipe 20"

    Is very difficult to do any analysis from the picture, the first step will be send out this pipe section for a failure analysis and when you have the results from it you will determine the next step

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