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  1. Specguy

    A778 vs A312 SS for ASME Pressure Piping Application

    The fluid is Black Liquor. Sodium Hydroxide (caustic) + lignin (a constituent of wood) at 35-70%. Used as a biofuel.
  2. Specguy

    A778 vs A312 SS for ASME Pressure Piping Application

    I recently discovered an equipment manufacturer specifying ASTM A778 tube product for an ASME B31.1 piping application of 150 psig @ 290 deg F. Has anyone else run across the use of this material spec, which is not listed in ASME B31.1 or B31.3, for Power Piping applications? I am aware of it's...

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