This European Standard specifies the requirements, sampling, test methods and conditions of delivery for seamless round copper tubes. It is applicable to tubes having an outside diameter from 6 mm up to and including 267 mm for: - distributing networks for hot water and cold water; - hot water heating systems, including panel heating systems (under-floor, wall, overhead); - domestic gas and liquid fuel distribution; - waste water sanitation. It is also applicable to seamless round copper tubes intended to be pre insulated before use for any of the above purposes.