5 replies to this topic

[ezralh]

Folks,

 

Is there any a standard that specify the minimum pipe size that can go into pipe rack? I tried look into ASME B31.3 and API 5L but they did not mention anything related to it.

[latexman]

This is usually a company policy.  My experience has seen that somewhere at the 1.5-2 inch pipe is the minimum.  It depends on how close cross members are for support.

[shvet]

As latexman said it's company policy. As per my experience for 6m between supports no less 2".

[jignesh2003bhalu]

Mechanical strength of pipe reduces as diameter decreases.  Small size pipes have greater tendency to sag when they are erected and additional supports / guides become necessary to keep them in position.  It is, therefore, recommended to use 1.5” as minimum pipe size on pipe rack and sleepers.  Only in exceptional cases (like very costly material of construction, etc.) lower sizes should be considered.  However, short lines, which do not run on racks like piping vents, drains, miscellaneous connections for process pumps, sample connections etc can be of smaller pipe diameter.

[fallah]

ezralh,

 

In many engineering practices, the 2" pipe is the minimum pipe size can be put over a pipe rack...

[ezralh]

thanks all for the info