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  • Users: Nikk5
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  1. Nikk5

    Exchanger expansion joint material / tube material

    Hi group, I have a particular situation with an exchanger, described as follows: It is an exchanger (shell tube type) with fixed tube sheets and expansion joint in the shell. Original design included CS shell with an expansion joint, tubes and tube sheets of the same material (SS 316). the CS...
  2. Nikk5

    Minimum Flat Plate Thickness

    Ok, If I define a max allowable deflection "y"= 4", and my flat plate is 0.250 thick, 45' diameter, uniform pressure of 20 psi How can I verify if thickness is ok ?. I have played with Roark's formulas but since deflection is quite bigger than thickness, they don't seem to fit. Thanks, Nikk5
  3. Nikk5

    Minimum Flat Plate Thickness

    Hi, I need to obtain the minimum thickness of a flat carbon steel plate under the following conditions: 1) Circular bottom plate (radius = r) under uniform pressure P, and the plate is fixed at the periphery. 2) The plate is resting on the soil, and the soil has enough bearing capacity to...
  4. Nikk5

    410ss to 410ss

    Is possible to weld 410ss to 410ss without PWHT using austenitic E-309 / 309L or NiCrFe electrodes ? The purpose of the weld in this case, is to join structural beams of 410ss that act as support of plates in the botton of an atmosferic distiller tower. I'm not a welding expert, so i'll...

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