Dimensional tolerances
Thickness
Glass ceramics
Packaging
Surface properties
Cast steels
Defects
Ceramic coatings
Performance testing
Visual inspection (testing)
High-voltage tests
Reports
Quality control
Non-metallic coatings
Steels
Chemical technology equipment
Vitreous enamel
Accuracy
Finishes
Chemical plants
Link: BS EN ISO 28721-1:2019 Vitreous and porcelain enamels. Glass-lined apparatus for process plants Quality requirements for apparatus, components, appliances and accessories
Source: BSI Standards