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This European Standard specifies the requirements, sampling, test methods and conditions of delivery for copper tubes. It is applicable to seamless round copper tubes having an outside diameter from 6 mm up to and including 219 mm for pipeline systems under vacuum or for distributing the following medical gases intended to be used at operating pressures up to 2 000 kPa: — oxygen, nitrous oxide, nitrogen, helium, carbon dioxide, xenon; — medical air; — specific mixtures of these above mentioned gases; — air for driving surgical tools; — anaesthetic gases and vapours.