This part of ISO 28721 specifies requirements for the thermal shock resistance of, and heating and coolingprocedures for, glass-lined apparatus, components, accessories and pipes primarily used for processequipment in chemical plants.
EN ISO 28721-3:2011 history
2011EN ISO 28721-3:2011 Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 3: Thermal shock resistance (ISO 28721-3:2008)