In this standard graphical symbols are laid down for heat insulations, fire protecting insulations and sound insulations which are used in scheme drawings.#,,#
DIN 85005-23:2004 history
2004DIN 85005-23:2004-11 Ships and marine technology - Graphical symbols for technical documentation - Part 23: Isolations
2004DIN 85005-23:2004 Ships and marine technology - Graphical symbols for technical documentation - Part 23: Isolations