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  1. LISAEK

    Differentiating between SA 106B and API 5L X-42

    Thanks, Stanweld. I knew it could be stamped for multiple grades so appreciate the help. Lisa
  2. LISAEK

    Differentiating between SA 106B and API 5L X-42

    Metaljon, thank you for your information. Lisa
  3. LISAEK

    Differentiating between SA 106B and API 5L X-42

    What is the best way to identify an line already in service as SA 106B or API 5L X-42 using non-destructive techniques? The carbon contents are similar so I don't think we can use carbon content. How does X-42 get it's strength - by heat treatment? Do other elements play a role also? Thank...
  4. LISAEK

    Coating for HF Alky Prefrac Charge Drum

    Everyone, Thank you for your advice. We will not be coating this drum at this time. We will install samples and evaluate during the next unit T/A.
  5. LISAEK

    Coating for HF Alky Prefrac Charge Drum

    What coating should I use in a prefract charge drum in an HF alky unit? Contents include C3's, C4's, anhydrous HF at about 90 F. It is carbon steel and estimated long term corrosion rate is low (2 mpy), 3 mpy on acid outlet. Min/max temperature in the 75 - 115 F range. It is nearing end of...

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