Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by zijincheng

  1. zijincheng

    Allowed under ASME Code? Drilling Radial Hole in 150lb flange

    Its complicated as to why we can't drill in the pipe, but our customer has a 2" distance between weld rule that they like to follow, so that eliminates drilling in the pipe spool. We can't even shorten the pipe spool because its fitting to fitting, and the we have check/gate valves above and...
  2. zijincheng

    Allowed under ASME Code? Drilling Radial Hole in 150lb flange

    Thanks for all your replies, we have an existing skid and the customer has requested a vent hole drilled into the flange of this specific spool. This hole would be used to vent out air. We would readily use an orifice flange (e.g. cut off the existing flange and weld on an orifice flange) but...
  3. zijincheng

    Allowed under ASME Code? Drilling Radial Hole in 150lb flange

    Hello all, I have a piping spool piece with a 150lb flange that is 1" thick and 12" diameter. I would like to drill a 1/8" pilot hole through the flange (radially) and then add a 1/4" NPT tap at the end for a plug. Some calcs, the 1/4" NPT tap is approx 7/16" diameter, meaning there is still...

Part and Inventory Search