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Recent content by pwees

  1. pwees

    galling

    I have a roll and pin of D2 and S7 tool steels. Galling is a problem at the mating surfaces. Can this be related to the items being the same Rockwell hardness and if so, why? The hardness ranges are 58-62 Rc.
  2. pwees

    Caustic piping

    I have read somewhere that it is poor practice to use small diameter piping for caustic. Any truth to this? Pwees
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