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Associate

Join Date: Sep 2008
Location: Vadodara,India
Posts: 40

schedule & class

03/05/2009 6:04 AM

what is difference between schedule & class?

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Pathfinder Tags: class Schedule
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Guru
Engineering Fields - Piping Design Engineering - Retired Piper

Join Date: Feb 2007
Location: Bayonet Point, Florida
Posts: 635
Good Answers: 60
#1

Re: schedule & class

03/05/2009 10:40 AM

I can only assume that you mean Schedule and Class as used in Piping Engineering and Design:

Schedule refers to the wall thickness of pipe and butt-weld fittings

Class refers to flange ratings and the rating of valves

These terms are also used in:

  • Education
  • Electrical equipment and material
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Associate

Join Date: Sep 2008
Location: Vadodara,India
Posts: 40
#2
In reply to #1

Re: schedule & class

03/13/2009 5:05 AM

thanks for reply but what it means rating?

for example what is difference between 150# & 300# flange?

I know that As per our pressure requirement we select particular class of flange as per ASME B 16.5 standard.

but what exactly 150,300,600 is related with value of pressure.

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Guru
Engineering Fields - Piping Design Engineering - Retired Piper

Join Date: Feb 2007
Location: Bayonet Point, Florida
Posts: 635
Good Answers: 60
#3
In reply to #2

Re: schedule & class

03/13/2009 10:47 AM

Go here:

http://www.scsenergy.com/scsdataflgrating.htm

For a Flange Rating Chart

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Anonymous Poster #1
#4
In reply to #3

Re: schedule & class

10/11/2014 7:36 AM

hi ,

do you have any idea why the socket weld components are designated by class not by schedule ?

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Anonymous Poster (1); Mitul (1); PennPiper (2)

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