Boiler tube sheet

the general calculation:

first determine the force the inside pressure make on the pipe & than calculate the right thickness.

force=inside pressure * area of longitudinal cross section (not the flow cross section).

for example : 1 m of pipe inside dia. 50 mm 2 bar pressure is :

F[N] = 0.2 [N/mm^2]*(1000[mm]*50[mm])=10[kN]

now calculation of "t" - the thickness of pipe: (the whole force laid on 2 sidewall thick)

T = yield strain of the pipe material

n= safety factor

L= pipe length

T= (F[N]*n)/(L*(2*t))

about boilers :

1. i don't familiar with the safety factors
2. U need to calculate the bending of the pipe as beam clamped in its 2 edges with force on it. again - i don't know what is the allowable sag allowed.

hope i helped you a beat