标准号:IS 4049 Pt.1-1988
发布日期:1988/11/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:Specifies the profile dimensions, and technical delivery conditions of dished and flanged, pressed or spun ends designed on the basis of outside diameter commonly used as end closures of pressure vessels, receivers, tanks and similar equipments.1.1 Where the ends have reinforced or flanged-in manholes, it is recommended that they are made to the same geometric shape as the plain ends.