Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
PD 6550-4:1989 is part of the series of documents related to BS 5500:1988, which is the British Standard specification for unfired fusion welded pressure vessels. Specifically, PD 6550-4:1989 serves as an explanatory supplement to BS 5500:1988, focusing on a particular aspect of the standard.
In this case, PD 6550-4:1989 deals with Section three of BS 5500:1988, which covers the design of heat exchanger tubesheets. Heat exchanger tubesheets are critical components in the construction of heat exchangers, serving as the structural support for the tubes and providing a seal between the shell and tube sides of the exchanger.