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  1. Quillion

    Machining allowance API 650 Table 5-3b Shell Manhole Covers / Flanges

    Of course. That makes perfect sense. Thank you.
  2. Quillion

    Machining allowance API 650 Table 5-3b Shell Manhole Covers / Flanges

    Thank you for your quick, clear response. It was very helpful. I don't understand the logic in only machining the flange face. Do you not also require a good seal on the cover side?
  3. Quillion

    Machining allowance API 650 Table 5-3b Shell Manhole Covers / Flanges

    Do the thicknesses given in this table include a machining allowance for the gasketed face? Are they the required finished thicknesses or the raw material thicknesses? Where can this be verified?

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