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1 thickness for 2 standards??

1 thickness for 2 standards??

(OP)
hi,

I have two wall thickness formula's for piping:
 - The 1st one is according to the ASME B31.3 i.e.
  t = f(working pressure P, external diameter D, design stress S, weld factor z); S,D,P and z are given.
 -The 2nd one is according to the EN 13480-3 i.e.
  t = f(allowable pressure Ps, outside or inside diameter Do or Di, allowable stress f and weld factor z)

The question is:
How can I use the data given by the first formula for the calculation of the thickness according to the 2nd formula?
(I have not any data or document conserning the Euro Standards)
If in the answer, you refer to an other formula, please quote it.

regards,

RE: 1 thickness for 2 standards??

Well Give me the material in ASTM or EN , diameters, corrosion , allowance , design pressure ,etc..
I will give it a try ,...
I will use mathcad.

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