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  • Users: rayhani
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  1. rayhani

    required bolt torques and moments

    i need a reference for the required bolt forces/torques in design case and hydrotest conditions of heat exchangers.any one can help?
  2. rayhani

    hydrotest conditions

    In ASME SEC.VIII Div.1 APP."S" due to rigidity design we will have to perform some calculations which may modify flange design. do we need to check the rigidity in hydrotest condition? since we will have 1.3 times the design pressure in hydrtest condition this may cause some...
  3. rayhani

    gasket selection

    i do not have any standard or guidline for selection of gaskets (variouse types of gaskets as per ASME SEC.VIII DIV.1 APP.2)due to design condition (temp.,press.,service,...) of heat exchanger. i wonder what is the margin for selection of spiral wound,groove, flat or etc. should any one have any...
  4. rayhani

    thinwall or thick wall expansion joints???

    i'm working as a mechanical designer of shell & tube heat exchangers for 5 years but still not satisfied with the suitable selection of expansion joints for the following reasons: 1-thick wall expansion joints: these types of expansion joints are exclusively designed by TEMA standard with all...

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