##### ASME_Max_Allowable_Pressure_Of_Piping

ASME_Max_Allowable_Pressure_Of_Piping

##### ASME Boiler Tube Thickness Calculator

C = minimum allowance for threading and structural
stability (see PG-27.4.3)

D = outside diameter of cylinder

E = efficiency (see PG-27.4.1)

e = thickness factor for expanded tube ends (see
PG-27.4.4)

P = maximum allowable working pressure (see PG-21)

R = inside radius of cylinder; for pipe, the inside radius
is determined by the nominal outside radius minus
the nominal wall thickness

S = maximum allowable stress value at the design temperature
of the metal, as listed in the tables specified
in PG-23 (see PG-27.4.2)

Sb = maximum allowable stress value at the design temperature
of the base metal, as listed in the tables
specified in PG-23, for a bimetallic tube in which
the clad strength is to be included (see PG-27.4.10)
Sc = maximum allowable stress value at the design temperature
of the clad metal, as listed in Section II,
Part D, Tables 1A or 1B, for a bimetallic tube in
which the clad strength is to be included (see
PG-27.4.10)

t = minimum required thickness (see PG-27.4.7)

tb = minimum required thickness of the base metal for a
bimetallic tube in which the clad strength is to be
included (see PG-27.4.10)

tc = minimum required thickness of the clad for a bimetallic
tube in which the clad strength is to be included
(see PG-27.4.10)

tcâ€² = minimum effective clad thickness for strength purposes
for a bimetallic tube in which the clad
strength is to be included (see PG-27.4.10)

w = weld joint strength reduction factor per PG-26

y = temperature coefficient (see PG-27.4.6)