This European standard specifies the requirements, sampling, test methods and conditions of delivery for seamless round copper tubes covered with solid plastics material. It is applicable to tubes intended for: distributing networks for hot water and cold water, hot water heating systems (temperature not exceeding 95? including underfloor heating systems, domestic gas and liquid fuel distribution. NOTE The primary purpose of the covering is to protect the copper tube against external corrosion in service. In addition, the covering can give some protection against impact and mechanical loading during transportation, installation and operation. Coverings whose primary objective is thermal insulation are not included in this standard.