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Quality Requirements Edition 6.0                                                                                  European Enamel Association




            7.23. QUALITY REQUIREMENTS FOR ARMATURES, FORM PARTS, PIPES, VALVES AND AGITATORS FOR THE CHEMICAL INDUSTRY


            7.23.1 Application area


            These requirements are applicable for:

                - parts of steel

                - parts of cast iron
                - parts of stainless steel



            7.23.2 Test methods



             Item   Name                                                                        Applicable standards
             4.3    measurement of the thickness of the enamel coating                          EN ISO 2178, EN ISO 2360, EN ISO 1463
             4.25   determination of the resistance to chemical corrosion by hot sodium hydroxide solution   EN ISO 28706-4/9
             4.33   determination of the chemical corrosion rate in hydrochloric acid vapour    EN ISO 28706-2/13
             4.34   determination of the crack formation temperature                            EN ISO 13807






















            © EEA2025                                                                                                                                 page 85
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