Pipe tolerance

[Bobfromoh]

There is a fabrication tolerance of 12.5% on pipe. In stress calculations the wall thickness (sch 40) must be reduced by this amount. My question is about stainless pipe. Does this tolerance also apply to 5S, 10S etc

 

[codeeng]

You should check with the applicable pipe standard e.g. A312 refers to A999 which says -12.5%. I think they're all the same but you should check.

 

[JoeTank]

Large diameter pipe fabricated would not use a 12.5% tolerance. The wall thickness tolerance would look more like a plate tolerance.

Steve Braune
Tank Industry Consultants

http://www.tankindustry.com