Flange bolt-holes orientation

From: <Liu>
Date: Wed Sep 04 2002 - 10:17:00 EDT

All,

Unless otherwise noted, piping spool fabricator will assemble flange so that the bolting holes straddle the principal center line of piping or equipment. so what if I have:

  1. Piping runs from SE to NW then an Elbow tuning straight down, on the end of Elbow there is a flange. What orientation the bolting holes will be?
  2. piping runs from SE to NW. In the middle of this piping run, there is a Olet type branch, after the Olet there is a flange. So what orientation the bolting hole will be?

Thanks a lot!
Robert Liu Received on Wed Sep 04 10:17:00 2002

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