I have a few questions that I need help with please:
1. When developing weld procedures to weld pipe materials like P1
(A106 grade A, B, C, and API 5L X-41, X-46, and X-56) to the same or
any P1 to P1 combination for ASME B31.3 application in an oil and gas
production site for flow lines, I do not need Charpy impact testing
for temperatures of -20F and above right?
2. What if I'm developing welding procedures to join API wellhead
flanges (materials: 4130 welded to the same), is there any minimum
temperature for Charpy impact requirement, in other words, if the
temperature anticipated is going to be -20F and above, is Charpy
impact testing required for this material. If Charpy is required and
it is not at -20F, at what temperature is it required, or do I have to
test for impact/toughness no matter what the temperature is for the
4130 material?
3. What if I'm developing a welding procedure to transition from API
wellhead to ANSI line pipe (material: 4130 to A106 B or any other P1
material), since the design of this joint is based on the weaker
material (A106 grade B or other applicable P1), do I need Charpy
impact testing for -20F and above?
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