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  • Users: Raza Rauf
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  1. Raza Rauf

    Confirm material grade and electrod

    Confirm material grade and electrode for welding. Chemical composition: Fe 95.5 Cu 2.5 Cr 1.0 Mn 1.0 Chemical composition is result of key way of shaft PMI.
  2. Raza Rauf

    How to Rectify defects in new Heat Exchanger at Manufacturer Site?

    Dear Reader, Presently, we have identified defects in final fabricated heat exchanger. Please guide by mentioning the repair strategy of defect with exact reference of ASME Code / TEMA Code reference. 1. Few tubes ends are fused. (5mm Tubes are extended from tubesheet) 2. Pitting observed on...
  3. Raza Rauf

    Heat Exchanger Re-tubing

    Due to Re-tubing overall length of the exchanger will be reduced by 20mm, in order to compensate this tube sheet is of 38mm thickness instead of 28mm. Please explain the effect of Heat exchanger design by this change and any evaluation is required. Can the increase in tubesheet thickness have...
  4. Raza Rauf

    Electrode for Cast iron with API5L

    Hello Reader, Which electrode to be used for welding grey cast iron with API5L? Moreover, please share the reference for future. Thanks!
  5. Raza Rauf

    Considerations for creating new manway in Storage tank manufactured in 1958

    Hello Reader, I am looking for criteria/factors to be considered while creating new manway in a storage tank of acid. The tank is designed on API 650 and manufactured in 1958. The old man way is not safe with respect to size of opening and is at the top of tank. I am thinking to create new...

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