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  • Users: pmarriott
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  1. pmarriott

    ASTM A105 - normalised or not ?

    Some fittings and valve manufacturers offer forged fittings, flanges, valve bodies etc. in Carbon Steel ASTM A105N. I realise the N suffix denotes a normalised product which has received extra heat treatment, but I am uncertain as to why the N grade should be specified. What practical benefit...
  2. pmarriott

    Piping Calculation Software Required

    I have some very old computer programs which have been satisfactory for calculating ASME B31.3 and B31.1 pipe wall thickness and branch reinforcement data for many years. Our new issue of computers at work no longer handle these ancient programs very well. We are in desperate need of new...

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