CR    D_i (Standard-type dished head)

CR    1,3 x D_i (Flat-type dished head)

KR    acc. to D_i (15 - 50 mm)

SF    3,5 x t

DH    dished height

TH_i    SF + DH

Legend Standard-type/flat dished head

t = wall thickness

D_o = outside diameter

D_i = inside diameter

CR = crown radius

KR = knuckle radius

SF = straight flange height

DH = dished height

TH_i = total height inside