DIN28011-Torispherical-heads

Hebei Haihao GroupHHCurved heads DIN 28011/cap formmeasure in mm1CoverageThis norm is to use for curved heads in cap form(bumpedespecially at heads of sections-have to arrange extra.boiler heads)with following connections:Curved heads,elliptical head see DIN 28013.n=da2=0,1dah123,5s0h2=o,1935da-0,4555The calculation of the necessarywall thickness results forexample:This norm consider for one piece heads with and withoutweld seam with a external diameter da=>4000 mm andfor pressure tanks according to the technical rules ofa wall thickness s=<5o mm.pressure tanks(TRB,AD-leaflets)#For heads in larger dimensional range consider analo-for steam boilers according to the technical rules ofgously the Scope of this norm,at which the tolerance-steam boilers (TRD)2 Type of design,description2.1 Geometrical connectionscurved partBorddapicture1s=wall thickness,see Section 3.4.5Capacity of the curved part (without boarding height h1)V=o.1(da-2s)External surface of the curved part(without boarding height h1)Aa=o,99.daInternal surface of the curved part (without boarding height h1)Ai=o.99.(da-2s)Reference line will be measured out of the finished kerb with m according to table1At the order the designation of the reference line can be arrange.Email:sales@haihaogroup.comwww.haihaopiping.com