Special solid copper pipes for medical gases and vacuum, which meet the requirements of the standards BAS EN ISO 7396-1 and BAS EN13348 regarding the quality and production process. The composition shall meet the following requirements: Cu + Ag = min. 99.90 %, 0.015 % ≤ P ≤ 0.040 %. This quality of copper shall be marked either as Cu-DHP or as CW024A. They shall be degreased and cleaned inside so that any grease left outside does not exceed 0.02 gr/m2. The identification shall be done interchangeably along their length with permanent marks of pipe dimensions, manufacture date, name of manufacturer. The pipes should be closed with plastic plugs on their ends and delivered in lengths of 5 m. A set with fittings,