Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 12: Spot, seam and projection welding (ISO 15614-12:2021); German version EN ISO 15614-12:2021
Water-tube boilers and auxiliary installations - Part 5: Workmanship and construction of pressure parts of the boiler; German version EN 12952-5:2011— 90 стр.
Water-tube boilers and auxiliary installations - Part 6: Inspection during construction; documentation and marking of pressure parts of the boiler; German version EN 12952-6:2011— 36 стр.
District heating pipes - Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Part 2: Installation; German and English version EN 13941-2:2019— 195 стр.