The head thickness tables may be applied to ellipsoidal 2:1 heads or torispherical heads. They may be applied to seamless heads (joint efficiency = 1.0), double-welded butt heads that have been fully ...
The height of the head is just 25% of the diameter, and the radius varies between the major and minor axes. Torispherical tank heads feature a dish with a fixed radius. The knuckle, the transition ...