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  1. cbabblingbrook

    Measuring sprial serrations for flamge surface finish

    Scipio, Thanks for the reply! I would certainly like to get my hands on a comparitor gauge. Please post if you find the manufacturer.
  2. cbabblingbrook

    Measuring sprial serrations for flamge surface finish

    According to ASME B16.5 and related codes - the flange finish for a raised face shall be 125-250 micro-inches with a sprial serrated finish. QUESTION - How do you measure this roughness? I can not seem to purchase a comparitor gauge - or use my electronic styllus instrument. If I measure...

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