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  1. robert2

    Hydrogen Charging Service?

    I am looking for a definition of 'hydrogen charging service', which is mentioned in API 579 related to the assessment of blisters and laminations in pressurized components. Can anybody provide me a definition? The only thing that I have found was the following quote from AEF on a discussion...
  2. robert2

    Welding procedure for weld a sleeve on internally coated pipe ?

    I am assuming that the corrosion is on the OD of the pipe as you don't want to damage the internal lining. At 0.625 in. thick, you are likely not going to heat up the internal pipe surface sufficiently to damage the coating when installing a sleeve to the OD as long as there is some flow in...
  3. robert2

    Welding Support Brackets To An ASME Pressure or Nonpressure Vessel

    Check API 653 for guidelines on welding and repair of existing tanks/vessels.
  4. robert2

    Actual properties of A36 vs. minimum

    A steel supplier will not have every possible steel type and grade that is listed in ASTM standards. They often will stock a higher grade of steel plate that can be used for several order inquiries, the most common being yield strength and impact toughness. As most of the steel specifications...
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