This European Standard specifies the quality requirements for apparatus, components, appliances and accessories of vitreous glass lined steel (including semi-crystallized enamel coatings) and steel cast used for process plants. It specifies the quality requirements and the tests to be carried out by the manufacturer as well as the necessary actions for repairing defects. This European Standard is also applicable to glass lined pumps, pump components and fittings. This European standard is not applicable to glass-lined flanged steel pipes and flanged steel fittings. NOTE 1 Provisions for glass-lined flanged steel pipes and flanged steel fittings are given in DIN 2876 [1]. The test methods specified cover checking the enamel, dimensional accuracy and performance of apparatus and components. This European Standard applies to new apparatus and components as well as used ones that have to be re-enamelled. This European Standard does not contain requirements regarding the chemical and physical properties of vitreous and porcelain enamels. NOTE 2 Examples of test reports are given in Annex A.