Formulas for calculating Weight of Pressure Vessel Component

[mechcolor]

Guys,
If anybody know about any of the direct formulas for calculating direct weights of pressure vessel components like shell, head covers, flanges etc., please share.
Thanks.

[ashfaqanwer]

Formulas for weight of shell and heads
Weight of shell = pi*Dm*t*L*d
Weight of heads:
hemispherical = 1.57*Dm*Dm**t*d
2:1 ellipsoidal = 1.084*Dm*Dm*t*d
Cone = Ac*t*d
where;
Dm = Mean vessel diameter, in
L = Length of vessel, tangent to tangent, in
t = vessel thickness, in
Ac = Area of cone, in2
d = density of material, lb/in3

Calculation for weight of weld neck flange
1. [(O*O*pi)/4 - (B*B*pi)/4]*T
2. (B+G)*pi*G*H
3. 0.5[(B+2G+W)*pi*W*H
4. ((D*D*pi)/4)*T*N
5. V = 1+2+3-4
6. Weight = V*d
where;
T = thickness of flange, in
O = Flange OD, in
D = Bolt hole diameter, in
H = Hub height, in
G = hub thickness at small end, in
W = width of hub, in
B = ID of flange, in
V = Volume, in3
d = Density of material, lb/in3
N = Number of bolts, holes

[ashfaqanwer]

You can also get the weights of standard flanges in all types and pressure ratings at the following link:
http://www.thermometricscorp.com/technical.html

[mechcolor]

Thanks.