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Standards for pipe lines:

- liquid petroleum : ANSI/ASME B31.4-liquid petroleum transportation pipingsystem

- Gas : ANSI/ASME B31.8 Gas transmission and distribution systemGas pipe line ANSI/ASME B31.8

P= (2St/D) x F x E x T

P= design pressure , lb/in2

S= specified minimum yield strength , lb/in2 ( table 1)t= nominal wall thickness , in

D= nominal outside diameter , in.

F= design factor (table 2)E= longitudinal joint factor ( table 3)

T=temperature derating factor ( table 4)

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liquid pipe line ANSI/ASME B31.4

P= (2St/D) x F x E

P= design pressure , lb/in2 gauge

S= specified minimum yield strength , lb/in2 ( table 5)t= nominal wall thickness , in

D= nominal outside diameter of the pipe, in.F= design factor of 0.72E= weld joint factor ( table 6)

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General table of pipe data

Rules of Tomb

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Reference: Pipe Line Rules of Tomb Handbook

E.W. Mc Allister , Editor , second edition