|Where cylindrical headers are provided
their working pressure shall be determined by Equation
|The attachment of ends and the method
of calculating the working pressure shall be in
accordance with clause (f) of Regulation
Subject to the following modifications:-
K = 0.19 for ends integral with or flanged and butt
welded to the header.
= 0.28 for ends directly strength welded to the
header in an approved manner.
d = internal diameter of the header.