Materials which are used to close two side holes of canister that are pressurised or unpressurised, with thin or thick wall, cylindirical and mostly are produced like in shape of semisphare, are called as Dished head in Industry. Material thicknesses specify the form of dishing. As follows, you can see the values that belong to form of collar dishing.
Materials which are pressurised or unpressurised, with thin or thick wall, cylindirical and mostly look like metal sphere, are called as Dished head in Industry.
sphere, dished head, ridging, cylindirical metal, dishing form, collar dishing, spherical cannister