PIPE SIZES

I am a beginner in this piping field. And I have a very basic question. Could any one tell me the relation between pipe size and ID. For eg:

If we have 12" pipe the OD is 323.9mm which is same for all the schedules. But I want to know a method to know the thickness. If it is 12" Sch40 the thickness is 10.31mm If it is Sch80 thk is 17.48mm

Is there any way to remember the thickness of pipe for various sizes. Please excuse me if it is a blunder question.

Cheers
Jijoy

[Non-text portions of this message have been removed] Received on Wed May 12 00:22:00 2004