NEN EN 14866 : 2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Steel substrates
  4.1 Delivery
  4.2 Analysis
  4.3 Hydrogen permeability
  4.4 Fish scale test
  4.5 Pickling speed
5 Enamel frit(s)
  5.1 Delivery
  5.2 Coefficient of expansion
  5.3 Fusion flow
  5.4 Boiling water vapour resistance
  5.5 Acid resistance
  5.6 Thermal shock resistance
  5.7 Adherence
6 Characteristics of the enamel coating
  6.1 Adherence
  6.2 Thickness
  6.3 Thermal shock resistance
  6.4 Fundamental defects
  6.5 Open defects
  6.6 Edge covering of gas-gas heaters
  6.7 Boiling sulphuric acid resistance
  6.8 Rework
7 Characteristics after packing
  7.1 Packing pressure
  7.2 Visual examination
  7.3 Edge covering of gas-gas heaters
8 Documentation
Annex A (normative) Method for determining thermal
        shock resistance of vitreous or porcelain
        enamel coatings

Describes the minimum requirements and the functional characteristics of enamel coatings applied by any enamel process, such as: wet dipping, wet flow-coating, wet spraying, wet electrostatic spraying, wet electro deposition or dry powder electrostatic spraying, to profiled steel heat exchanger panels in regenerative heat exchangers, before and after packing in baskets.