EN 13479:2017 - Welding consumables — General product standard for filler metals and fluxes for fusion welding of metallic materials, was developed by CEN/TC 121 on Welding and allied processes.
EN 14209:2017 - Preformed plasterboard cornices — Definitions, requirements and test methods, was developed by CEN/TC 241 on Gypsum and gypsum based products.
EN 15824:2017 - Specifications for external renders and internal plasters based on organic binders, developed by CEN/TC 125 on Masonry.
These European standards provide presumption of conformity with the essential requirements under Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/EEC.
Please follow this link to find these hENs cited in the OJEU.
For more information on the CEN standards under the Construction Products, see the CEN website.